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2021-12-31-accounts

REGJS"I'ERED COMPAIYY f4uMBER: CE024473 (England and W*les) RF,GISTERED CHARITY NUMBER: 119932 Report of the TrustevJ 8nd Unaudited Finaneial Stwtem¢nts for the Period 29 De¢ember 2020 to 31 Deeember 2021 for International Group for the Psychology of Mathernaties Educ#tion A¢¢ountsncy C.o-operativc 56 Dorchester Road Lytchett Minsrter Poole Dorset BH166JE

Intern8tion81 Croup for the Psychology of M¥thern8tic8 Edueatio Contents of the Fin8ncl81 St8trments (or the Period 29 December 2020 to 31 Deeernber 2021 Page Management Report of ICPME Op¢r8ting and Financial Review Report of the Trustees 3 to 24 Ind¢pendent Ex4miner'$ Report 25 Statsment of Fin4ncial Activities 26 Balauee Sheet 27 Notes to the Finan¢i*l Statement5 28 to 30 Detailed St&tem¢nt of Fin&nci¥l A¢¢ivities 31

International Croup for the Psychology of Mathematles Education Mana¥eTnent Repoi* of IGPME for the Ptriod 29 Dcccmber 2020 to 31 Deeember 2021 On D¢ceTnber 29, 2020 IGPME received a mebsage from the Charity Comtni55ion, notifyiiig ihat IGPM& has been acccptcd as a CliaTTtdblt Incorpordted or&F￿lS￿li￿n under UK law. This completed a long proccss to egtablish a legal foundation for IGPME as an urgdni£alion. In 2021, the IGPME Board ol. Trutstees Ithc International C.omrnittcc, IC, in what follows) has b¢en lcdrning about the details for running its adminibtration in accordance with UK laws. The orgdnizatioii is governed by a constitution that bp¢eifies tlie procedures for clcctions, voting on proposals and oth¢r fundameiitsl regulationb aboul the fun¢tioning of Oklr organizÉi¢ioll. The constitution can bc changed only via a votc of lh¢ iiienibersliip at ail Ai)nual GEneral Meeting {AGM). Election5 for Pre%idcnt and ncw International c.ommittee Inembers tdke place at thc AGM, held near the end of each Annual C.onfercnce. In addition, proposals for major d¢cisigns are PTcsellted. disius￿￿ and voted on at the AGM. A Polity Mceting is held for open discussion of issues durin¥ ihe week prior to Ihc AGM. I'he IC is responsible for adD)inist¢ring th¢ affairs of the Group, including ov¢r%ight of the Annual Coi)fer¢ncE and of the Group's finances. I'he IC. hag 17 mcmbers, including an Executivc Committc consistins of Ptesidenl, Vice President, Secrctsry. .1 rca%ur¢r, and tlic Policy Chair. The Prcsidcnt is for a 3-ycar temi. otli¢r Theiiibers are elected for 4-ycar ternhs. with tour mciiib¢rs Tcplaced tach year via election by thc mcmbcTship. IGPME also has dn adn)inistrative inanagcr (AM}, who takes carc of many runnit)g issu¢s ijf the organization. Our previous AM Birgit Cjriesc reiired froni thc po%ition in 2021 and in November 2021 IGPME appointcd Angateeah Kheniduth Singh as the new Administrative Managcr. BeKaiisc of thc pand￿￿1¢, the IC and executiveb had only i)Mline nieetings in 2020 and 2021. In 2020, th¢ IC had 2 m¢ctings and thc cxccutiwes had 16 rneetings. Ill 2021. the IC liad 7 rn¢ctin¥¥ and the executiv¢s had 6 me¢tin8S. AGM for 2020 and 2021 were organized as online Tneetin¥s. ¢v¢n if ihib Wds not ¢Xli¢tly according to our constitution. Thesc mcctirtgb had 71 and {cir¢al 150 participdting men)berb. respectively in 2020 and 2021. Th¢ decision to have the AGM as an online meeting wa% llndnimoiisly agreed by all participants in th¢ AGM. In 2020 we decided to not organize an election of new IC niembeis. Inst¢ad, the IC nominaied trusttees for one year an(i postponed the election of new trustees foi on¥ year. having 8 trusteets retlTill8 in 2021. In 2021. 8 new trustees werc elected, wilh 156 tnemberb 8ivin8 their votrs. IGPME dlso oruiani£ed an extraordinary kT¢I)¢Tdl mKting onliii¢ in O¢lober 2021 with 35 participants. In this m¢¢ting Wim vJn D(￿ren W<lS votsd to be the IGPME presidei)il¥r5 from diffe￿nt part% of the world ¢stabli%h ¢ollaboTative netWQTk.% to further our colleotive undcrstandillg of how to irnprove mathematics education in thcir rc%pectivc countries. providing grants to help bring scholars from Under-rep￿enIed r¢gions of th¢ world to our annual meeting. di%scminating our research for ihe benefit of improving matliematic% cdllcation at thc cla88room, gehool, district, and natioiial Icvcl%. di%8erninating our research for the benefit of improving studenls, experiences with mathernatics education at the ¢10gsrnom, school. dislricr, and national lev¢ls. di%8cniinlltiiig our research for the benefit of improving Ihc preparation of matheniatlcb teachers at the univer51ty level around the wgrld. prvviding iiccess to oui iesvdTch publications to the public. Page I

Int¢rnationAI Crroup for the Psy¢hology of Mathernatics Educatio Operatlng and Finthneial Rtview for the Period 29 Decetnber 2020 to 31 Deeember 2021 Ach5evements of IGPME In 2021 B¢causc of thc COVID-19 pandemic, ICJPME xctivilieg liave been s¢veiely compromised. IGPME could not organi2e its yearly onsite cOnf¢r¢n￿S for 2020 and 2021 as pldnn¢d. For 2020, IGPME ¢anc¢ll¢d thc y¢arly ¢onferen¢c, bui organized a mole limited Virtual meeting instead, hosted by Khon Kaen univer4ity,-l-hailand. Th¢ virtual niectiiig hJd 312 participants. In 2021. IGPME decided to organizc the confercncc oiiline. The conf¢ren¢e was organiz¢d iogeiher by Khon Kaen university, Thailand and Tcchnion univer￿ltY, Isracl. Thc number of 2020 and 2021 qubmiltcd RR proposals wa.% 296, and 146 of thcm wcrc acecptcd. Of tho8e rejected a% RR proposals, -14 wcre invited to be rcsubmittcd as OC. and 13 SS PP. Thi8 virtudl mccting had 262 participant In 2021 PME also organizcd a series of six online mectings for Early Re%carch¢r¥. The8¢ talks wcr¢ comdutted at different time zoncs to cater to diffcrcnt regions of the world. The preparatiOTbS for the 2022 conference have been ongoing, and IGPME organizes PME45 in Alicante. Spain on 18-23 July 2022. The PME46 will be or8aniz¢d in July 2023 in Israel. In 2023 a regional conf¢r¢n¢e will be organized in Thailand. To advanLe sLi¢ntific discussion and dibsemination of scientific findiiigs. IOPME will host and share keynote prts¢ntations online in ihe coming conferen¢¢s. IGPME hds examined and resolved the r¢lat¢d l¢gal and iechnical 155ues. IGPME has d¢v¢lop¢d a proposa] for a publication ethics statement for th¢ ¢onferen¢e procecdiiigs ol. PME. Besides the idea gf do¢umenting the high stdniJdrd& of PME publiuiion pr£letice, a publi¢ly availdble publication eihies stateinent is a n¢ces8ary condttiun for gettingF PME public£ltlOll5 indexed in Scopus. This proposal Also awaits approval at the AGM. PME Finance5 Despite having to cancel conferences, th¢ IOPME financial situation is While our incom¢ d¢Llin¢d due to having rewer membership fees, also our costs on travel and #ccvmmoddtion were reduced. Th¢ Iredsur¢r hab pf¢pdred a more detailed report on IGPME finan¢e$. Due to Covid TeStTiCtions, our 2020 accounts got delayed. H¢nce here, we report on PME finances both for y¢ar¥ 2020 and2021. Our main sour¢c of income is the conference registratioll fee from our membership, which Consists in membership fee, donaiion to the Skemp fLind, and tl)¢ conference fee. ATound IO% of our incomc is collceted a% Skcmp fund to be donated as travel and confercncc fee qupport, to participants in nced. IGPME hELS continued to suppo11 r¢warcher% fri)m undcrrepre8ented countries to Come to conferences with grants from thc Skemp FuT]d. In 2021 IGPME gave grants to I I rcscarchers covering ihe cost of their parricipation the 202110 2021 onlin¢ confer¢ne¢. Further information IGPME website.. httPs.'Jlwww.igpme.orgl PME44 website.. https'.Ilpme44.kku.d¢.ththomel PME45 w¢bsit¢'. http￿..}1web.Ua.esIpMe4sI Pag?e 2

International Group lor thc Psy¢hology of Mathematles Eduefition Report of the Trust¢e$ for the Perind 29 December 2020 to 31 December 2021 Thc trustc¢s who arc a180 directors of thc charity for thc PUTPQSCS nf the Companies Act 2(X)6. present their r¢port with the financial statements of the charity for the period 29 Dcccinber 2020 to 31 DeLen)ber 2021. The trust¢¢s have adoptcd the provisiLin% of Accounting and Reponing by Charities.. St&lernei)t of Recommended Pra¢ti¢¢ applicable to charitic% prcparing their a¢¢ounts in d¢cordanc¢ with the Financial R¢porting Standard applicabl¢ in the UK and Republic of Iroland (FR% 102) (effective l January 2019). INCORPORATION Tlie ¢haritabl¢ conipany was inco￿Orated tsn 29 De¢emb¢r 2020 and comnieneed trading on the same date. OBJECTIVES AND ACTIVITIES Objectives and aim$ 3. The objects of the CIO are to advance the field of mathematic& education lor the publie benefit by: proinoting and Stil￿UlatIng research. Orgaiiising Tegular education(Il ¢onferen¢e% around thc world. supporting Tegional workshops Around the world in gcncral, and in undcr-rcprescnicd rcgions of thc world in particular. collaborating witli organisations with simi14T aims. facilitating ¢ro*s-di%¢iplinary discus%ion and thc %h3ring of infornlation and rcbearch with an inicmational cmphasis. h¢lping wholars fmm different parts of the world cstablish collaborative networks to fvrther our collectiv¢ undcr%tanding of how to in)prove mathematics education in thcir respcctivc callntrics. providing giant% to help bring scholars from under-representcd regionb of the world to our annual me¢tinb. disseniinatiTbg our research for thL benefit of improving mailiernatics education at the classroom, school, district, and national levels. dissen)inating our research for the benefit of improving %tudents' ¢xp¢rienc¢s with mathematics educatlgn ut the cliiN%ruom, SLhool. di4triLt, and national levels. disscrninating our r¢s¢areh for the bellefit of in)proving ilk preparation of mathematics teachers at the university leyel around thc world. providing access to our res¢ar¢h publications to the publi¢. Nothing in this constitution sh411 authorise an application of the property of the CIO for the purposes which are Dot haritable in aCcord￿ce with section 7 of the Charities and Trustee Investment Iscotldndl Act 2005 and section 2 of the Charilies Act (Northem Ireldnd) 2(K)8. Pagc 3

International Group for tbe Psychology of Mathematics Educatio Report of the Trustees for the Perlod 29 De¢¢mb¢r 2020 to 31 D¢cemb¢r 2021 OBJECTIVES AND ACTIVITIES Significant activities ¥nd upplie￿tIon of inL*ffte #nd pruperty 4. POWERS The CIO has power to do anythiJ]g which is Gqlculated to further its objects or is COTKlucive or inLidental io doing so. In PZ4rticular. the CIO'S powers in¢liide power to.. (al borrow mon¢y and to charge thc whole or any Pdrt of its property us %e¢urity for thc repaymerti of th¢ moncy borrowcd. The CIO mu8t comply as appropriatc with sectlOll8 124 and 125 of thc C,haritie8 Act 201 l if it wishcs to mortgagc land. (b) buy. takc on lease or in exchange, hirc or othtTWiSe a¢quire any propcrty and to maintain and cquip it for US¢. 1¢) scll. Icase or otherwi%c disposc of all or any Pdrt of thc propcty bclonging to the CIO, In exercisillg this power, the CIO must cort]ply as appiopriate with sections 117 and 119-123 of the Charities A¢t 2011. {d) employ and remunerdte such siaff as are necessary for carrying out the work of ihe CIO. The CIO may employ ur r¢mun¢rate a ¢hdTlty Irusle¢ only lo the extent that it is permitte(i to do so by clause 6 (Benefits and paymenis ts) charity trust¢¢4 and conne¢ted p¢rsonsl anJ provid¢d it Loji)pli¢s With the conditions of those clauses. (e) deposit or invest funds, employ a professional fund-manager, and arrange for the illvesknnents or other property of the CIO to be held in the name of d nominee. in the Sdme manner dnd subjeci to the same condiiions as the trustees of y trust are perniilted to do by the TrJstee Aci 20(Kb. 5. APPLICAI'ION or INCOME AND PROPERTY 5.1 Th¢ incorne and property of th¢ CIO ivjust be Jpplied solely towards the promotion of the objecls. (a) A charity trustee is entitled tg b¢ reimbur8ed Irom the property of the CIO or rnay pay out of such property reasonable expenses properly incurred by hini OT her wheii acling on behalf ol- the CIO. {b) A charity trustee may benef)t from trustee indemnity insurance cover p￿reh￿Sed at the CIO'S expens¢ in ac¢ordance with, and subject to the conditions iii. section 189 ot the Charities Act 2011. 5.2 None of the income or property of the CIO may be paid or transferred directly or indirectly by way of dividend, bonus or otherwise by way ol- prolit to any member of the CIO. Tl)is does nol prevent a memb¢r who Is iiot Also <1 charity trustee receiving.. (a) a benefit from the CIO as a bei)eficiary of the C".10. {b} rcasonablc and proper remuncTation for any goods or %ervices Supplied tts tlie CIO. 5.3 Nothing in thi% clausc shall prcvcnt a charity trustec or conncetcd person recciving any bcncfit or payrnent which is authorised by elausc 6. Pagie 4

International Croup for the Psychology of Mathem4tles Educatio Report of the TTUStets for the Period 29 Deeembcr 2020 to 31 December 2021 OIIJECTIVES AND ACTIVITIES Public benefit Purpnsos public bcncfit (Part l) (a) What IGPME doe5 and hvw- The Int¢rndtiondl Group for the PSycholo￿Y of Milthemalics Education organizes an annual conference in collaboration with the local organiieis. PME finds a capable local organizer and makes an agrtcnicnt with thcm about organi7.it)g thc conlerence in a way that guarantees the scientific quality of the pr()gram and prcscrvcs thc ci)Ilabor&tivc and in¢lusiv¢ spirit of PME. PME sElects mcmbcrs to thc international prograni coimmittec of the conference that is responsibl¢ for tl)e scientific progratn of the ¢onferencc. Pmb also providc% financial guarante¢ in casc of a 1088 for organizing the conference and whei) thc coiJfcrencc makes surplus, thc surplus 1% donat¢d for PME. As an outcome of the ycarly conferellce thcre is a proceeding% of the scicntific papcr%, whieh PME publishe5 online freely for aiiyonc to rcad. 'I'hc %cicHtific aciivitics and rcscarchcr llctworking ilt the conference often lead to ¢ollaboraliv¢ publications. Tc%carch projec18. and collaborativ¢ projccLs for mathcmaties cdueation development or Provide %upport for Similar activitie.% that have %tarted elscwhcrc. PME also organi7.es publication of scientific books. So far, PME has publish¢d two handbooks sun)marizing the scientifi¢ output of PME activitics. PME conference fee in¢lude% a donation to Skemp Fund that provides scholarships for mathematics education researchers wlio cgme from underreprebented countries and are facing finaiiLidl or other difficultie5 Ihdt tnltke their partlClP¢ition to inlernaiional wnf¢r¢nc¢s difficult. A subcomniittee nominated by the board of truste¢s decid¢s which of the applicants will receive grants. PME help5 finding academic support foT writing a PME ¢QTbference Pdper for those eaTly career researchers who are strugglii)g with academic English or have not sutTiciently ¢xperienced supervisor in their own institute. The sU￿[uS frgm yearly confeiences has been used for supporting) regional conferences in areas where few researchers have beeii actively engdged wilh PME activitie5. So far, ¢he5c regional ¢onferences have been organized in Ch ile and Russia. PME supportb also other special prujects. Both rtgioiial conferenceb aiid special projects are funded based on application. The board of tTU5t¢es- or, in case of funding over 5 OOOe, the AGM - decides which projects to fund. Ib) IGPME'5 purpose 15 beneticial- Historically, rescarch into thc tcaching and Icarning of mathcmatics was carried out either by mathematicians or psycl)ologi8ts, with little eollaboration or intcrdction bctwcen thc two di%tinct di8ciplinary groups. PME brings the%e groiip.% togethcr, tLI form an international Te%earch c£)mm4Jnity %tronger th7￿ n thc sum of its parts. The public bcncfit of PMF. is thc advanecmcnt of cdiication. All s()cieties bclicwe thai education bcnefits both the individual learner and qoeieiy at large, by contributing to eeononiic proipcrity and also lo thc cultural and Spiritual wcll-bcing of 50cioty. 'I'hc ultimate pUrp￿￿e of all rC￿earch in thc field of mathematics education 18 to improve the qualTty of mathcmatic8 instrllctioll at all pha￿c$ of cducation and in all cdiicational Settings. thcrcby to understand and improve the quality Lif studenL%' experience of learning mathcmatics and thcir enjoymcnt and mastcry of the subject. The Icasons for thi% cndcavour include thc cconomic prosperity of nations and iheir ability to comp¢te internationally, as well as to promote the well-being, iniellectual and aesthetic fulfilment of individuals, and th¢1¥ ability to enbfii¥e in and contribule to (l)e cultural life of their communilies. Mitthematics, perhaps more than any other School subject, Icaves a large part of the UK population with f¢elings or disdffection, ali¢nalion and h¢lpl¢bbnes5. It is socially accepiabl¢ to c14im that on¢ is 'no good ai mdths when nobody would admit to being unable to read (Sliy) with the same ¢qiianimity. This has consequ¢n¢¢s for individual autonomy and for the UK economy. Pag¢ 5

International Croup for the Psychology of MathematlC5 Educstion Report of the Trustees for the Period 29 December 2020 to 31 December 2021 OBJECTIVES AND ACTIVITIES Th¢ improvement of mJthematics teaching and learning is tackled on several fronts. but research in math¢matics educalion underpins lor should underpin) dll of ihem. This goal is evideni in the diverse dclivlties of PME, sucli those focusinb) on.. mltihemittics dida¢iics (the syst¢mdti¢ s¢ien¢e of insirudionl: investig*tions inio students, ways vf knowing and underbldnding mathenidtics, ledrners, mdih¢n)dli¢dl n)isconcepiiony and ways of dddressing them in instruction,. and on mathematics teacher education. In order lo be rigorous, dll retsea￿h in mathem(iti¢s educaiion mus¢ be lounde¢J on fimi theoretical principles and meihods, and bdsic research devoted ro 'iheory' is a si&inificant part of every PME Conference. PME Membe￿ take what they gain from their participation in the Confeiences back to their re5PCCtive countries of work and study, where they are leading authoritie% in and cot)tributor% to natlOn￿lI and Tegional Initiatives in connection with 5¢hooling, ted¢hcr education and univcrsi¢y mathcrnatic8 teaching. In mo%t coiintri¢%, for example. it is thcse cxpcrts who dre giv¢n rcsponsibiliiy for the writing and rcvision of rnathemcitiC5 Curricula and approvcd textbook.￿. A crucial contribuiion of PME to this national activity by its mcmbcr8 is thc international character of Ihc PME community.. exposure to practices in other coulltrie% motivJt¢s us to quc%tton and critically cvaluate our own traditions and habitual pritC¢i¢eb, #nd thercby to su%tain what IN good to changc what could bc done differently and pcrhap5 bettcr. Many PME members also aci as co￿￿ult#￿t5 to variou% dgencic8 contracted to work with developing couniric$ in the reform of their mathen)aiics curricula. relatcd in8trucliondl materials. and mathematic8 teacher education. In this way. PME plays an esseniial rolc Ihc intcllcctual power-house behind the improvement of mathematics t¢a¢hing and learning acrogs Ihc world. Purposes and public benefjt {Part 2) (a} All thosc with an intcrest in mathcmatics cducation including academics, r¢s¢ar¢h¢￿, teaching profcssional8 and siudcnts, eat) benefit from th¢ organisation's purposc 13. OperatSng and publlc benefit {Part l) (a) PME Annual General Meeting {AGMI has decided thai all expenditure thai excecds 5 QOOE shoiild be approved by the AGM. Fxpenscs auihorized by an AGM decision or expenses thai fall under the 5 OOOE threshold are either dccidcd by the board of trustccs or by a subcommiltcc nominated by the board Of irustees. (b) PME'S main focu8 each year is to provide and pr¢par¢ an annual confercncc within an agreed country as mthtioned earli¢r in thi% 4cction. (cl PME has developcd critcria I policy set out by the trustees regarding the making of grants and this lays within our Skemp Fund grynt making policy. 14. Operating and public benefit (P8rt 21 (al The conference fe¢ in¢lud¢5 a membership f¢0 for that year. Hence, a participant of a conf¢ren¢e automatically become8 a member. To be eligible for regioniil LonferenL¢ or special projeci SLlPPOrt, the M￿7n appliL£int needs to be PME ￿eMber. (b) PME conference pruceedings are available online for dnyone freely to read. 15. Operating public benefit (Part 3) (al The charity chargeb d fee for aitendanc¢ at Its annual conf¢ren¢¢. Att¢nd¢es may apply for d grant from th¢ Richdrd Skemp Memorial Fund. This Fund was established to provide lindncial support for prospective PME participants fron] under-represented Lour)tiies, or countTie5 in which no financial support is available. in order to dllow thetn to altend the (b} We reolize that tr2velling (usually flying) to the annual conference increases conference participants, carbon emissions. Icl 'fhe board of trustees gets refunded their hotel slay for ihe exlrn nighib they have to because of the board meetings before and after the annual conference. They are also provided meals during the board meetings. The fflember5 of th¢ int¢iniltional piogidTn coniinitt¢r {IPCI ale refunded foi theii travel expense to the meeting al the confereTh¢e venue.'I'he president vJsit¥ the venu¢ twic¢ before th¢ ¢onf¢i¢nre and the oth¢r IPC memb¢tb Visit th¢ venu¢ once before the confereiice. PdbTe 6

International Group for thc Psychology of Math¢rnatie$ EdueAtlon Report of the Trustees for the Period 29 December 2020 to Jl December 2021 OBJECTIVES AND ACTIVITIES Socigl inve$tment$ 8nd clarification of the charity Classification of charity - Educati¢)nal (a} our chdrity sponsors or undertakes Tebearch. Makes graiiLs to individual5. (b} Wc providc an annual confcrcnce, rcgional confcrcnccs, other scientific actiwitics, lecturcs, discussion forum, prcsenlations. newsletters. We help, th¢ mathematics educatoTh (i.e. teachejs teaching mathematics, teacher educators) and mathcmatios ¢du¢ation rc￿arChers globally. We bring together rese8r¢h¢TS and oth¢rs int¢r¢st¢d in mdth¢matics edu¢ation, facilitates exchange of sci¢ntifJ¢ information. Collaborates witl) other organisations dnd projects with which we share a similar purpose and objective. Grant rnaking We PTovide grants to those who Sponsor or undertake research. These can be individuals and groups alike. STRUC'I'URE, COVkRNANCk AND MAIYAGEMENT Governing document Th¢ Charity is controlled by its goveming document, a decd of trust, and con5tihLtes a limitcd company, limited by guarantcc, as defined by the Companies Ac¢ 2(X)6. Charity constltution Datc of coi)stitution (originally registcrcd 29 December 2020 - Charity numbcr.. 1192932) Date amended.. July 2022 P¥g¢ 7

Int¢rnational Croup for the Psychology of Mathematic5 Education Report ofthe Trustees for th¢ Period 29 December 2020 to 31 Deetniber 2021 STRUCTURE, GOVERNANCE AND MANAGEMENT Recruitment appointtneNt of new trustees 9. MEMBERSHIP OF THE CIO 9.1 Adrniwsiun of new members Membership of the CIO is OPETI to anyone who is interested in furtherin8 Its putyoses, and who, by applying for meMber￿h1p. has illdicated his. her or its agreement to become a member and acceptdnce ofthe duty of menibers %et out in clause 9.3. A member may be an individual, a cojyorate body, OT individual or cory)oratc body rq)rcsenting an organisic tion which is not incoTporatcd. Ib) Admi%sion proccdure The charity trustc¢.$: li) may requirc 4Lpplieations for membership to bc made iii any rcasonablc way that they decide. lil) shall, if thcy approvc an Trpplication for membership, notify ihc applicant of their decibion within 21 days. liiil may rcfu%e an application for menibcr8hip if ihcy bclievc that it is in thc bcst intcrc.%t8 of thc CIO for Ihcm to do so. livl shall, if they decide to rcfusc an application for mcmbcr%hip, 8lVC thc applicmnt thcir rc￿￿1)5 for dvin¥ so. within 21 dayq of the decision bcing takcn, and givc the applicant thc opportunity 10 appcal against thc irfusdl. Iv) shall give fair con5idcration to any such appcal, and 8hall infonn thc applicani of their d¢ci8ion, but decision to confim rcfu%al of the application for member%hip bhall bc final. 9.2 Transfer of membershlp Membcrship of the CIO cannot be iran8ferr¢d 10 anyone ¢lse ex¢¢pt in the case of an iiidividual or corporate body reprcsenting an oiganisation whi¢h is not incorporaied. whose m¢mb¢rship May be tran5ferrcd by the unincotporated organisation to a new representative. Such iran5f¢r of memb¢rship does not take effect until the CIO has reccived written noiification of ihe transfer. 9.3 Duty of memb¢r5 It is ihe (iuty of ¢a¢h ￿eM￿r of the CIO to exercise his or her powers ds a member of the CIO in ihe way he or she decides in good faith would b¢ most likely to further the putposes of the CIO. 9.4 Termtnation of n)embershlp (d) MembcThhip of the CIO comes to an end if.. (i) the member dieb, or, in the case of an organiution lor the iepTeseiitative of orgallisationl Ihai organisaiion Ledses to exist., or (li) the member sen(Is a nolice ofresigndtion to the chdTily truslees., or (iii) any sllm of money owed by the member to the CIO 1% noi paid in lull within six months of ils falling due; or (iv) the Lharity trusi¢e¥ decide thdl It is in the best inter¢st5 of the CIO th4Lt Ihe member in question bhould be removed from membership, and pass a re501utioii to that effecl. (bl Before the chdrity trustees take any decisioll to ietllUVL gomeL)ne from membership of the CIO they must.. {]} inform (he member ofihe Teasotb& why it 1% propts%¢d ro remove him, hcr or it from mcmbership,. (jil give the n)ember at least 21 cleai (IdyS noliLe In whith lo makc representation￿ to thc charity tru5tec5 as to why he. she or it %hould not be renioved from membcr4hip' (iiil at a duly conbtilutcd meeting of thc cliarity Ini4t￿￿, considcr whcthcr or not thc n)en)ber should bc rcmovcd froni rnembership.. (iv) collsider at thilt meeting any repr¢￿ntatIOnS which thc mcmbcr makes a% to why the m¢mbcr should not be remov￿., and {v} allow the rncmber. or the nicniher's rcprcsent&tive. io make those representations in pcrbon at that mc¢ting, if the mcmbcr $0 choo%es. 9.5 Membership f¢cs Thc CIO rnay require members to pay reasonable membeibhip fees to the CIO. 9.0 Informal or as50¢iate Inon-voting) membership Page 8

Intern#tional Group for th¢ Psychology of Mathematlcs Education R¢port of the Trustee5 for the Period 29 December 2020 to 31 December 2021 STRUCTURE. GOVERNANCE AND MANAGEMENT (a) The Charity trustee% may create associate or other cla88¢s of non-votlng membership, and may deteminc the rights and obligations of any such Inernbers (intluding payment of mcmbeT8hip fces), and the conditions for admission to, and terminoltion of membership of any %uch cla55 of memkr8. (b) Other rcfcrences ill this constitution to "m¢mbers" and "mcinbcNhip do not apply to non-voting members, and i)on-votin8 Tnembers do noi qualify as members for amy purpose und¢r th¢ Charities Acts, Gcllcral Regulations or Dis%olution Rcgulations. Page 9

International Group for the Psychology of MAthematics Edueatio Report of the Trustees for the perl￿d 29 December 202Q to 31 December 2021 STRUCTURE. COVERNANCE AND MANAGEMEf4JT Decision makinki and Cvnerxl Meeting¥ uf Mefftbvr 10. MEMBERS, DECISIONS 10.1 General provisions Exc¢pt for those decisions thal niust be taken in a particular way indicated in ¢lduse 10.4, de¢isioDS of the members of the CIO may be taken eitl)er by vote at a generdl meeting as provided in cldUS¢ 10.2 or by writt¢n resolution ¥LS provided in clduse l 0.3. 10.2 1'aking ordin4ry decision5 by vote Subject to clause l 0.4. aiiy decision of the nienibetb of the CIO may be taken by Means of a resolution at a general meeting. Such a resolution may bc passcd by a simplc majority of votcs ¢asl ai the mecting includjng vote5 Gast virtually. 10.3 T&king ordinary decisions by written re501utioN without a general meeting (a) Subjcct to clause 10.4. a resolution in writing <1grccd by a simple majority of all thc mcmbcrn who would have been entitled to vote upon it had it been propo%ed at a gcncral niccting shall be eff¢ctiv¢, providcd that.. (il a copy of the propos¢d rcsolution has been 8ent to all tl)e membcrs eligible to vote; and (ii) a 8implc majority of mcmbcr% has signified it% agreeinent to The resolution in d documcnt or documcnt8 which are T¢ccived at thc principal office within the period of 28 days bcginning with the eirculatiots date. Thc document signifying a mcmber's agreement mu8t bc authenticatcd by their signature (or in thc ¢ase of an organisaiion which is a member. by execuiion according to its u%ual procedurcl, by a ststcmcnt of their identity aceompanyins the document, or in such other mai)ner as the CIO ha5 spccifjed. (b) The resolution in writing may comprise several copies to which onc or morc Membe￿ has significd their agrecment. (cl EliLpibility io vote on the resoluiion is Iin)ited io m¢mbers who are membeT8 of thc CIO on thc datc when thc proposal is first ¢irculaied in accordance with clause l 0.3{a). Id) Nut less than IO% of the members of the CIO Tnay request thc charity tru8tee% to make a proposal for d¢cisiot) by the niembers. 1¢) The charity trustees must within 21 days of receiving such a reqLiest comply with it if.. {1) th¢ proposal ib not frivolous or vexaiious. dnd doeb noi involve the publicdtion of defamatory Thaterial; {ii) the proposdl is stated with sutTicient Llariiy io enable Lffect to be given to it if it ili a&Fre¢d by the members,. and {iiil eff¢ct Can Idwfully b¢ giv¢n to ihe propobal if it Ib bo dgreed. ID Claus¢ 10.3{a), clause 10.3(b) and ¢lduse 10.3lcl apply to a proposal m£id¢ at the request vf rnernbers. 10.4 Decisions that must bt takeR in a p¥rticulAr way {a) tkcisions to appoint trustees at anni￿1 ¥eneral tneelingrs must b¢ taken by posiiional voting {lo be set out in detail by the charity trustee51 but this does nol affect the power given t(} the tn¢mbers (Trr the ¢harity trusteeb in clause 13.1{dl io appoiNt a new trustee oil a temporary basis. (b) Any decision to remove a tru%tcc must bc takcn in accordance with claus¢ 15.2. (c} Any decision to amcnd this COnSiituiion must bc taken in accordance with clau%c 28 of this constitution (Amcndment of Ctsnstitution}. (d) Any decision to wind up or di5solv¢ thc C.10 must bc takcn in accordancc with clause 29 of this con4titutii)n (Voluntary winding up or d]￿s01￿tiOn). Any deei¥ion to dmalgamalc or tran8fcr the undcrtaking of thc CIO to one or more other Clos Tllubt be taken in accordance with th¢ provision5 of thc Charitics Act 2011. 11. GENF.RAL MF.F.TINGS OF MEMBERS I 1.] Types of g¢n¢ral meetlng Thcrc must bc dll annual general mccting IAGMI of the membcrs of the CIO which can bc hcld in pcr%on, a% a virtual meettng or as a hybrid mceting. The fir%t AGM must b¢ held within 18 months of thc rcgistration of thc CIO. and subsequent AGMS must be held at intervals of not niore thai) 15 monihg. The ACJM mugt receive the annual statcmcnt of accounts (duly audited or examined where applicable) and the trustees, annual report, and mLiSt clect trustees as required under clause 13. Other general meetings of ihe members of the CIO be h¢ld al any time in person, as d VIrtUdl nieeiing or as a hybrid nieeting. Pdge 10

Internatlonal Group for the Psychology of Mathematics Education Report of the Tru5tee5 for the Period 29 Deeember 2020 to 31 December 2021 STRUCTURL COVERNANCE AND MANAGEMENT SubJ￿t to the followipg provisions 4 pei&on attending a meeiinkj virtudlly sh411 have the same righ14 to reLeivtt notice, speak. vote dnd otlierwise participate in the meeling) LIS he or she woiild hav¢ if dtt¥nding th¢ meeting in person. All generdl Meetin￿lS must be held in aLLor<tsnce with the following prgvisions. 11.2 Calling general meetlngs (a} The ¢hdrity trusteets-. (i) musl ￿11 the aniiiial general meetlll8 of the members of thc C.10 In accoTdance with clau5¢ 1 1.1, and identify it as such in the notice of thc llieeting,. and {ii} may call any other geiieral meeting of the membcrs at any tim¢. {b) The charity trustecs mu8t. within 21 days, call a gcncral me¢ting of the mernbers of the CIO if.. {1} they receive a request io do so from at least I￿/0 of the rnembeTS of the CIO. and If. at the time ()f any 8uch reqllest, there has not been any gcncral mecting ofthc mcmbcJE of thc CIO for morc than 12 rnonths. then this bub-clause shall have ¢ff¢ct as if were substituted for IOQ/o. li1} the request states the gen¢rdl nature of the busines5 to be dcalt with dt the iM¢etin& and is Juihenticated by the m¢mberfs) making th¢ r¢ques1. (cl Any such request may include particular8 1)f a rc8oliition that rnay propcrly be proposed, and is int¢nd¢d to be proposed, at the meeting. {d) A resolution may only properly be proposed if it is lawful, and is not defarnatory. frivolou￿ or vcxatious. {e} Any gcncral mcctinb7 callcd by thc charity tru8tces at thc ￿quest of thc mernber5 of thc CIO must bc held within 28 days from thc datc on which it is called. {0 If tlie chdTity trustce% fail to COTnply with thi% obligatitsn to call a gcneral meeting at the request of ils members, then the Iiiembers who requc%tcd the illeeting may thcmsclvcs ￿17 a general mccting. (gl A general nieeting called in this way must be held not more th4n 3 months after ihe dale when the members first Tcqllested the rtieeting. (h) The CIO must rcimbur5¢ any r¢abonabl¢ expenses incurred by the members calling a g¢nerdl meeting by reason of the failure of the chdTily truste¢s to duly call the meeting, but the CIO shull be entitled to be indernnified by the charity trustees who were Tesponsible for such failur¢. 11.3 Notlce of general meetin85 (a) Th¢ charity trLlStees, or, as thc casc niay be, the relevant rncmbcrs of the C.](), mu%t give at Icast 14 elear days notice of any gencrdl meeting to ill of the mcmbers, and to ally charity trustec of the CIO who is not a member. (b) If it is agreed by not Ic%s than 90'/Th of all mcmbcr8 of the C.TO. any rcsolulion n)ay bc prop05cd and pasbcd at the mccting even though The requirements of the above sub-elause havc not bccn mct. l-his sub-clausc does not apply where a %pccificd period of notice is strictly requircd by an()thcr clau%¢ in this con%titution, by the Charities Act 2011 or by the General Reguldtions. Ic) The nolice of any g¢nerdl meeling must.. li) btaie the tiine and dale of th¢ nie¢ting; lil) ¥(Jte the formal of the meeting (in peTr%on, virtual or hybrid) lili} give the address andlor the link tt) the virtual platfomi or %igning in codes al whieh the Tneeting is to take pluee., liv} give particularg of resulutioii which is to be moved at the meeting, and of Ihe ¥¢n¢Tal n&ttur¢ vf vther busin¥ss io be dealt with al the meeting- Iv) if a prtsposal ¢0 alter the CVT]Stitution of the CIO is to b¢ considered at the meeting, includE ihe text of the prvposed alteration; and Page I I

Intcrn8t101191 Croup for the Psychology of Mathematics Educution Report of the Trustees for the Period 29 December 2020 to 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGEMEIYT (vil iiiclude, with the noli¢¢ for the AGM, the annLial statement of a¢¢ounts and trustees. annual report, or where allowed under LldUS¢ 22 (Use of electronic Lommuni¢alion}. details of where the inforniation may be found on the CIO'S websit¢. {dl Proofthal aT) envelope containing a noti¢¢ wa% properly addres%ed, Prepaid and po8tcd; or that an electronic fomi Of notice was propcrly addressed and 4ent, ghall be con¢lusiv¢ ¢vid¢ncc that the notice was givcn. Noticc shall bc deemcd to be given 48 houis after it wa8 po8ied or %¢ni. {e) I'hc Proceedings of a mecting shall not bc invalidatc(I b￿a￿8¢ a mcnibcr who wa% ¢ntitlcd to reccivc notice of thc rneeting did noi receive it becausc of accidcntal E)nii%sion by the C.10. 11.4 Chairing of generAI meetlngs Thc pcrson clected d5 pre%ident by the mcMbCr￿ undcr cl4LU5C 13.2 {Elcctcd president of the Lhaiity tTUbteesl, shall, if present at the gencral meciing and willing to act, pr¢sidc a5 chair of thc mccting. Suhjcct to that, the membeTr of the CIO who arc present at a general meeting shall elect a chdir to preside at the meeting. 11.5 Quorum 8t gener81 meetings {a) No busine%5 may be transacted at any ¥¢ii¢rul me¢tin¥ of the members of th¢ CIO unless a quorum is present when the meeting starts. Ib) Subject to the followinu provisions, the qUOTum for gjeneral meeiings shall be the greater of 4 /0 or three members pr¢s¢nt and ¢ntitled to votL upon the business of ihe mceiing. A person shall be deemed to be present by dttending either in perbon or virtually where aiidng7enients for virtu￿1[ aiiendance have been made. An orbjanisation represenied by person present dt the Ineeting in a¢cord¢ince wilh Llaus¢ 11.8, is count¢d d5 b¢ing present. Ic) If the meeting hus been called by or di the requ¢s1 of lh¢ m¢mb¢rs and d quonlm is nol present within 15 minutes of the Starting time specified in the notice of Ihe n)eeiing, Ihe me¢ling is closed. Id) If the m¢¢tiiig hJs been called in any otheT way and d quorum is noi present within 15 minutes of Ihe slariing tim¢ specified in the noti¢¢ vf th¢ meeliRg, the chair mus¢ or on a question of adjournm¢nt niust be taken immedidiely. A poll on any other maller shall be taken, aiid the result of the poll shall b¢ announced. in such n)dl)ner as th¢ chdir of the meeting shdll decide, provided thdt the poll musi be taken, dnd Lhe result of the poll announced, within 30 day% of the demand fur the poll. Pduve 12

Intern9tional Group for the Psychology of Mithtmatici Edueation Report of the Trustees for the Period 29 December 2020 to 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGEMENT {d) A poll may be taken.. {i) at the meeting at which it was denianded: or {ii} at %om¢ other time and place specified by the chair; or {iii) through the use of electronic conimunicatlOD5. le) In thc cvent of an equality o*votc4, whether on ¥ show of hands or corresponding virtual procedurcs or on a poll. the chair of thc mccting %hdll have a second. or casting vote. lfj Any objcction to thc qiialific4Ltion of any voter must ￿ raiscd al the meeting ai which the vote is Cd%t and the decision of the chair of the niccting shall bc final. 11.7 Electronic VotI￿g (a) Thc cliarity tru%tcc% may determine tl)at the meTnbers shall votc tsnline to elect charity tNst¢¢s or to make a d¢cision on any mattcr that is bcins decided dl a geneTrl meeting of tlie membctb. (bl Where onlinc voting is (J¢cidingT a matter. the trustee5 Inust send io members of the CIO. not less than 14 day5 before the deddline for reeeipl of vote& d notice by emdil, if tlie men)b¢r hab agreed to receive notices in this Wdy uniler clause 22 (Use of elwtronic communications), including dn Lxpldlldtion of ili¢ purpose of ihe vore and the m¢dllb by which the iiienib¢r may vote onlin¢ namely tho detail% and proe¢dure to be followed by the member. The online voting platforin should conlaiii details of the resolution being pul Io d Vote, or OF the Cdndidates for election, as applicable. {¢} Online voting must be conducted on an online platfomi based on the following principles.. (i) The votei's. infomiation and the votes are kept separated {anonynious vote). (li) Only memixrs get aLu¢sb to vote. {iii) Every member can vole only once. (iv) VoLes Can be independently verified if needed. (d) I'hc voling pro¢eduTe iiiubt specify the c105ing date and lime for receipl of vote&, and must state thal Jny votes rcccived afier the ¢105ing date or not con)plyin8 Wlth the voling procedure will be invalid and not be counted. {c) Aiiy dispute about the conduct of all online vote niust be refetTed initially to a pan¢1 set up by the charity trust¢cs. to consi%t i)f two trustees and two person5 independent of the CIO. If the dispute cannot be satisfaetorily resolved by the panel, it must b¢ r¢ferred to the P.lectornl Refom Services 11.8 Represflltation of orgaNi5at10115 and corporate mernbers An organi%ation or a corporate body that Ts a member of the CIO rnay, in accordance with its usual decision-making process, authorise a person to act ds Its representdtiv¢ at any gcneral me¢ting of the CIO. -I'hc reprcscntatlvc l8 cntitlcd to ¢xerri5¢ thr same powers on behalf of tlie organis2tion or corporate body as the organi%ation or corporate body could exer¢i%e as an individual niembeT of the CIO. 11.9 Adjournment of Theetings The chaii m4Ly Wlth the ¢onbeDt of a meeting at which a quorum is prebeni land Shall if 80 dircetcd by the meeting) 41djourn the meetinb tg another time aiidlor place. No business n)ay be iransacted at an adjourned meeting cxccpt busin¢sb which could properfy have be¢n transactsd at the original meeting. 12. CHARITY TRUSTEES 12.1 FunLIion5 dutie$ of ch8rity trustees The charity trustees shall manage the affairs of the CIO and may for thal PUTPOS¢ exercise all the powers of the CIO. It is the duty of ed¢h chdrily truslee: P¢Lbie 13

Inl¢rnatlon&l Group for the Psychology of Mathematles Education Report of the Trustees for the Period 29 December 2020 to 31 Dwember 2021 STRUCTURE, GOVERNANCE AND MANACEMENT (a} to ¢xercise his or her powers and to perforni his or h¢r functions a5 a tNstee of the CIO in the way he or she de¢iiles in good faith would be most likely to further the purpo￿5 of th¢ CIO,. and (b) to exercise, in the perforniance of those functions, 5u¢h ¢ar¢ and skill as is T¢awnable in thc circumstanees having regard In parti¢ular to: (i) any special knowledgc or ¢xperience that hc or She has or hold% him%elf or herself out as having; and (li} if he or shc acts as a Charity trustee of thc CIO in the cour8e of a business or prof¢ssion, to any special knowlcdge or experience that it is r¢awnable to expcct of a pcrson Acting in the course of that kind of buSinC￿$ or profession. Pagve 14

International Group for the Psychology of Mathcm4t5cs Education Rcport Dftht Trustces for the Perlod 29 December 2020 to 31 Dc¢emb¢r 2021 STRUCTURE. GOVF.RNANCE AND MANAGEMENT Induction and training of new tru5tee$ 12. CHARITY TRUSTEES 12.1 Functions and duti¢s of ¢hJTlty tTUStees The Lharily trustecs 5hdll manage the affairs of the CIO and n)dy for ihal purpose exereise all the power5 of the CIO. It is the duty of each charity trustee.. Id) to eK¢rcis¢ his or her powers and to perfom) his or her fuii¢tions as a trust0¢ of th¢ CIO in ihe way he or she decides in good faith would be mo%t likely to lurther the purposes of ihe LIO; ai)d Ib) to exercise. in the perfotmanc¢ of thub¢ fun¢iion&, suth Cdre and skill as i& reasonable in the circumstance5 haviD8 regard in parti¢uliir to". (il any bpecial knowledge or experi¢nee that he or she has or hold% himself or herself out as having., and (ill ilhe or bhe actN a5 d charity Iru%lee of the CIO in the course of a business or profession, to any special knowl¢dg¢ or experience that it IS Teabonable to expect of a person acting in the course of that kind ol. business or profession. 12.2 Eligibility for trusteeship {a) No one niay be appoiiit¢d a charity trustee.. {1) i(he or she is iin<ler the agc of 16 yc3rs,' or {ii) if he or she would automatically ccasc to hold office under tlic provision5 Outlined in clause 15.1{f). (bl No one i% enliiled lo act as a charity tNstcc whcther on appointmcnt or On any re appointment until hc or she h&5 cxpre*sly acknowledged, in whatcvcr way the charity tru￿tCeS decidc. his tsr her acceptance of thc 0￿1¢¢ of charity trustee. (cl Ai least on¢ of the tru%tces of th¢ CIO must b¢ 18 years of a8e or ovcr. If there is trustee aged at lcabt 18 years, the rernaining trustce or tNstCC5 may act only to Call a meeting of the chariiy trustcc8, or appoint a ncw charity trustc¢. 12.3 Number of ehxrity trusttes (a} There must be at least 5 charity trustccs. If thc number fall￿ below this minimum, th¢ remaining trustee OT tTUStees may att tsrtly to call a meeting of thc chartty tnjstccs, or appoint a ncw charity trLiStcc. {b) Therc must bc at least one truEtee that is a UK rc%ident. If the nurnb¢r falls below thi$ minimum, the remaining trustcc or tru%tees may act only to appoint a new charity trustee who 1% a UK r¢8id¢nt. {c) Nts more thlln thrcc charity irusiees frrjm the same coiintry shall be charity trustccs at any onc tirne. {d) Therc is no maximum number of chariiy trnstces that may be appoint¢d to the CIO. 12.4 First ehArity tru$tet% The first charity trust¢¢s of th¢ CIO are.. Markku Hannula Yasmine Abtahi IYa8aman Abtahi) Judy Andcrson Richard Barwell Arindam Bosc Trdcy Helliwell Yiming Cao Ccllcida Fernandc7. (Cencida Fernande7. Verdu) Ching Esther Chan Anika Dreh¢r Anthony E5sieii Eindt Heyd-metzuyanim Jodie Hunier Maitree Inpiasitha Maria Mellone MigFuel Ribeiro (Carlos Miguel da Silva Ribeiro) Lovisa Sumpter 'rhe first pre55dené of the charity trustees 15 (see 13.2(a) below): Mai'kku Haiinula 13. APPOINTMENT OF CHARITY TRVSTEES Page 15

InternAtional Group for the Psychology of Mathemgtics Education Repibrt tsf tlbe Trustees for the Period 29 DecLmbtr 2020 to 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGEMENT 13.1 Retirement by Rotstion {a} At evcry annual gcncral Tneeting of the memb¢rs of the CIO, one-fourth of the elected chlirity trustees sliall retirc from office. If th¢ nuinb¢r of ¢l¢c¢ed Lharity trub(¢¢s ib not four or d multiple of four, th¢n thv numb¢i ll¢£if¢st io one-fourth shall r¢tir¢ fr(Trm otTi¢e. but if theT¢ is only one chaTlty truste¢, h¢ or she sh411 retire. (b) The charity trustees to retir¢ by rotation %hall be thosL whg hav¢ been longT¢St in otTic¢ sili¢¢ th¢ir IdSt appointment or reappointm¢Dt. If any trusl¢es wer¢ Id%1 appointed or redPPOillted Oll th¢ sam¢ day iho4e tu retire shdll {unless Ih¢y otherwise agT¢e gmoiig themselves) be detemiined by lot. (c) The VdC<inLies arising niay be fjlled by the decision of the members at the dTrnual general meeting in accordanee with clau5¢ 10.4lal: any vacatLLies not filled at the annual general tnetting Tn<ly be fllled provided in cl£lU5e 13.1 Id). (d} Thc membcrs or the charity tru%tecs n)ay at any time dccide to appoinl a new charity irustee wheiher in place of a charity trustec who ha8 rctircd or bcen rclliovcd in dccordancc with clause 15 (Rctircment and rcmoval of Charity tru%tccsl or dn additional charity ttu%tcc. (c) A pcr50n so appointed by thc charity trustCC5 shall Tetire at the conclusion of thc annudl general mccting ncxt following thc dale of his appoinimcnt. Jnd shdll not bc countcd for thc purposc of detemining which of thc cliarity trU￿ceS is to retire by Totation at that mecting. 13.2 Prtsident Ele¢t and President of the ehArity trustees Therc shall onc Presidcni of the charity injstees. fir4t appointed in clau* 12.4 above and th¢reafter elected in aetordanec with thc proviqion8 following.. (a) At every third annual generdl mecting {beginning in 2021) of the members of the CIO, the position of Prcsidcni-Elect may bc fillcd by thc deci%ion of the mcmber% taken in accordancc wilh clausc l 0.2. (b) Thc prcsi(Jent-eleet will bceomc thc prcsidcnt and a charity trn8tee at the c4)nclll8ian of thc n¢xt annual gcncral meeting. (c) A ￿lldidale for President-Elect must.. (i) be a member of the CIO at the lime of election. (li) have served as a charity trustee or a Fomier IGPME International Committcc member la8 spccified in the Bye Lawsl previously. (iii) not currently be, or have been, Ihe President., this includes also past Presidents of the Fomier IGPME las specifi¢d in the Bye Lawsl; (iv) not be in violation of clau5¢ 12.3(c) (d) The Pr¢sid¢nt-Ele¢t shall r¢main a memb¢r of the CIO and every third annual general n)eeting (beginning in 20221 of th¢ memb¢rs uf th¢ CIO, th¢ Presid¢nt of th¢ ¢hdrity trust¢es Shall retire and ihe Presideni-Eleci shdll assutne the role of President ol'the charity trustees and hence become a trust¢¢. If, at ihis lime, the position gfpr¢sid¢nt-Elect is vacant. then the positiot) of President will be filled by the decision of the m¢mbers taken in dccordJn¢e with claus¢ 10.2 13.3 Th¢ role5 and duties uf the President aThd Pre5ident-Elect and such other charity tru5t¢e officers as the charity trusttts shall deem appropriate sh411 b¢ 5¢t out d¢tail in BY￿LaWS to be agrccd by the rnember5 from tijne to tirne. 14. INFORMATION FOR NEW CHARITY TRUSI'EES The charity tru%tecs will makc available to each new chdllty truqtcc, on or before his or her first appointTnent'. {a) a copy of tliis constitiition and any amcndmcnts mdde to it,. and {b) a copy of thc Clo's latc%t tru%tc£s' annual rcport and sldtcmcnt of accollnts. 15. RETIREMENT AND REMOVAL OF CHARITY TRUSTEES 15.1 A charlty trustee ¢eas£5 to hold office if he or she: (a} Rciires by notifying the CIO in writing (but only if enough charity trusiccs will remain in office when the notice of rc8ignation takes effect to fomi a qUOTum for mcctit)gs1. (b} [% absent withoul the permis%ion of the charity trustee% from all their meetings held within a period of twelve rnonth and the in]stccs re%olvc that hiq Dr hcr offiee bc vacatcd. (cl Dies. {d} In the Writ￿ opinion. givcn to the eompany, of a re¥istcrcd medical practitioner treating that pcr50n. has become phy%ically or m¢ntally incapable ofacting a% a di￿£10r and may remain $0 for mole thai) three Tnonths. (e) Is removed by the m¢mb¢r5 of the CIO in accordance with cl&us¢ 15.2. Pagve 16

In¢¢rnatlonal Group for the Psyehology of Malhernatics Education Report of the Trustee5 for the Periud 29 December 2020 to 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGEMENT (t) Is di4￿1]ried from dctink) as (i cliarily ¢rusiee by virtuc of section 178-180 of the Charities Act 2011 (or any statutory re-enactmeni or modification of that provision). 15.2 A charity trustee shall be removed from office if a resolution to remove that trustee is proposed at a general meeting of the rnember5 called for that purpose and propei'ly convened in accordance with clause I I, and the re501ution 15 passed by a two-third5 majority ofvotes cast af the rneeting. 15.3 A resolution to remove a charity trustee accordance with clause 15.2 shall not take effect unle35 the illdividual concerned has been given at Itast 14 elear days, notice in writing that the resolution is to b¢ proposed, specifying the circumstance5 alleged tQ justify removal I'rom office, and ha5 been give￿ a reasonable opportunlty of making oral Andlor )vritten r¢prcscntations to thc memhcrs of the CIO. 16. RkAPPOIN"I'MTr.NI" OF CHARITY TRUSTEES Any pcr%on who rctlTes a charity trustcc by rotation or by giving noticc to the CIO 15 cligiblc for rcappointmcnt. A char(ty trust¢¢ who has qervcd for two con8cciitivt tcmi8 may n(Trt be rcappointcd for a third Consecutive tcrm but may bc reappointed after an intcrval of at Icast five ycar%. 17. TAKING OF DECISIONS BY CHARITY TRUSTEES Any decision may be laken either-. (al Al a meeting of the charily ITUStees,' or Ibl By Tesolution in WTltin&y or ¢leclronic form agr¢¢d by a majority of all of the charity trustees, which may ¢ompris¢ ¢ith¢r d Single d￿Ument or seveTal documents containiiig the text of the resululion in like forn) to which the majority of all of tlie chaTlty trustee% hds sibynified their dgre¢m¢nt. Such a r¢wlution shall be effectiv¢ provided that.. (i) il copy of ihe pioposed rebolution has been sent, at ui as near as Teas(Trnably practlcdble to the same tiine, to all of the chiirity tru8t¢¢s,' and (ii) tlie mdjority of all of the Lhdrity trustees has signified dgreemeni to the resolkntion in 4 document or documents which hds gr have b¢¢n auili¢nti¢at¢d by their signdture, by a %latemeni of their ideniily accompanying th¢ document or docuiiieiits, or in such oiher indnner the cliarity trustees have previously resolved, and d¢liv¢reJ to the CIO at its priiicipal office or %ucli otheT pldce Ihe Irustees niay resolve within 14 days oltl)e circuldtion dale. 18. DLLEGATION BV CHARITY TRUSTEES 18.1 '1'he charity tru$te¢$ may delegate any of their poJYer5 or functior15 to a cornrnittee or committee5, aThd, ir they do, they must determine the terms and conditions on which the delegatlon Is made. The ¢h*rity tru$tees may at #ny time alter those terms and condition5, or revoke the delegation. 18.2 This power 14 in addition to the power of delegation in the General Regulations and any other power of delegation available to the charity tru5tee4 hut is sllbject to the following re4virement5= (a) a committ￿ rnay Consist of two or morc pcrwns, but at Icast one membcr of cach committec must be a charity trust¢c' (b) thc acL% ind procecdings of any ¢ommitt¢e must bc brought to thc dttcntion of thc charity tru8tces as a whole a5 soon as 15 reasnnably praeticablc. and (c) the chdrity trllslce% shall from timc to timc rcyiew the arrangcmcnts which they havc made for thc delegation of their powers. 19. MEETINCS AND PROCEEDINGS OF CHARITY TRUSTEES 19.1 Calllng meetings (Él) Any charity twstee may call a meeiing of the chdtity trust¢CS. (bl Subject to ihal, the Lharity tTUStees shall decide how their meetlllg￿ dre to b¢ Called, and what notice is required. 19.2 Chairing of meetinky The President of the charity Iruslees elected accordiiig 10 Clause 13.2 IPr¢bident-El¢ct and Pre5ideTrt of the chJrity trustecsl shall chair thc nieetings (Ff th¢ charity Lrustees. Il. th¢ Presid¢nl ib not present within 10 minutes <ifter the time of the ￿¢¢11￿8, the charity trustees present may appoint one of Iheir number lo chair th£lt n)eeting. Page 17

Intcrnation41 Group for the Psychology of Mathematics EducAtiDn Report of the Trustees for ihe Peylod 29 December 20211 to 31 December 2021 STRUCTURE. COVERNANCE AND MANAGEMEIYT 19.3 Procedure at meetings (a) No decisiot) shall be taken ai a meeting unle4$ d qLiorum is present at the time whet) ihr decision is taken. -11)e quoNm is two charity ttustees, or the number nedresl lo one Ihird of the tutal numbei of chaiity ttustees. whichtver is gredter. or such larger nun)ber as ihe charity Iruste¢% may de¢id¢ froni tinie to tin)e. A charity Iiuste¢ &hall not be Lounted in the qu(>rum presenl wheii any decision 1% 4Lbout a inatler upon whicl) he ur She is nol entitled to vote. (b} Quesiions dfibill&i dt a IneetinLJ shdll be decided by a majuTily of thos¢ elisible to vote. {Ll In the case L)f an equality ofvotes. Ihc chdll" %hall have d second or casting vott. 19.4 Participation in tneetings by electronic mean5 {al la) A nieeting may be held LIS a hybrid meeling or by suitable clectronic mcans agreed by the charity trustees in which each partitipanl may communicate with dll thc othcr participants. (b) Any charity trustcc participaling at a meeting by suitablc clcctronic mcan% (igrccd by the charity trustees in which a participant or participai)ts may conimunicatc with dll tlic othcr participants shall qualify as being present ai the meeiing. {cl Mc¢tings held by electronic mcans must comply with rules for meeting$, including ¢hairing and the taking of minutes. 20. SAVING PROVISIONS 20.1 Subjeet to clau8e 21J.2, all decisions of the charity trustee5. or of a Committee of eharity tru5tee$ shall be v&lid notwithstanding the partielpatlon in any vote of # charity trustee: {al who was disqualified from holding office. (b) who had previously rctired or who had been obligcd by the con8titution to vacatc office. (cl who was not entitled to vot¢ on the matter. whcthcr by reason of a conflict of inter¢%t or gtherwise. If, without th¢ vote of that charity truste¢ dnd that Lharily trus1e¢ being counted iii the quorum. the dtuision ha5 been made by a majoriiy of the charity trustees at a quorate mecting. 20.2 Clause 20.1 does not permit x churity trustee to keep any benefit that may be eonferred upon him or her by ¥ resolution uf the charity trustees or of a commitlee of Charity trustees if, but for Clause 20.1, the resulutio would hY4ve been void, or if thc charity trustee has not eomplied with clause 7 (Conflict5 of •ntere5t). 21. EXECUTION OF DOCUMENTS 21.1 The CIO Shall execute documen¢$ either by signAlure or by aifixin¥ it% 5eg1 lif it has one). 21.2 A docum¢nt is v4lidly executed by si8naluTe if it is signed by ai least two of the charity trusl¢es. 21.3 If the CIO ha5 a seal.. (a) It must comply with the provisions of the General Rcgulations; Ibl It must only be used by the authority of thc charity trL15tecs or of a committee of eharity trustees duly auihorised by the eharity trustees. Thc charity trustces may dctcrminc who shall sign any document to which ihc scal is affixcd and unle55 Otherwise determined it shall bc signcd by two chai'ity trustees. 22. USE OF ELECTRONIC COMMUNICA1'10NS 22.1 General The C.10 will comply with thc rcquircmcnls of the Communications Provi%ions in thc General Regulations and i particular.. (a) the rcquircment 10 providc within 21 days to any meiiiber On request i hard copy of any document or infom)ation sent to thc mcmber oihcnvisc than in hard ci)py form. (bl any requircmcnts lo provide inforniation to thc ComTnissitsn in a particular fom or manner. 22.2 Use of eleetronle eommunieations (a) To the C.10 Any mcmbcr or charity trustee of the CIO may communicate electronically with the CIO to dn addr¢%s sp¢Lified by the CIO for ihe PUTpose, so long as the ¢ommunication is auth¢iiticated in a Jnanner which is ￿t1&faLlory to the CIO. (b) By the CIO Page 18

InterThationAI Croup for the Psy¢holoEY of Mithematles Edueatlon Report of the Tru5tee5 for the Period 29 December 2020 10 31 De¢emb¢r 2021 STRUCTURF., GOVERNANCE AND MAf4AGEMENT (i) Any m¢n)ber or cl)arily trustee of the CIO, by pr¢)vidinB Ihe CIO with his or her email addres5 or sirnilar, is taken to have abFreed to receive communicalionb froin the CIO in electroniL forni al thal addres& unless the member has illdica¢ed to the CIO his or her unwilling)ness to receive such communications iii that fom). {ii) The charity trustees niay, subject to complianc¢ with any legal reguiren)entb, by m¢an5 of publiciltion on its website.. {A} Provide the members with the notice referr¢d io ID clau%e 11.3 {Nolice of gencral mcctingsl. IB) Give ¢harity trustees notice oftheir In¢¢tlllbT5 in dccordance with clausc 19.1 (Calling mcctings). IC) Submit any proposal to the m¢mbers or charity trnstccs for deCi￿lOn by written resolution or online votc in accordance with tlie CIO'S powerb under clause 10 IMcn)bcrs' dccisions), clausc 10.3. (T)cci510llS tak¢n by resolution in writing), or clause 11.7 (Ele¢lroni¢ voting). (cl The charity trustees must.. (i) Take reasollable st¢P5 to entsure that mcmbeTS and charity tru￿tee$ arc promptly notified of the publication of any such notice or propoqal. (lil Send any such noti¢¢ or proposal in hard Copy fomi to any membcr or charity tnLsiee who has not Conscntod to rc¢eiv¢ ¢ornmunicatians in clcctronic fom1. 23. KF.F.PINe OF REC.ISTERS Thc CIO must caTriply with its. obligiitioiis under th¢ General Regulations in reldtion to the keeping of, and PTOViSiQll of access to. register5 of its members and charity tTUbtees. 24. MINUTES The charity tnistees must keep minutes of all.. (a) appoinlnients of o￿lCerS Tnade by the Charily Irusiees. (b} proceedin&Trs at gienerdl me¢tings ofthe CIO. {c} meetingis of tlie charity trustees and commill¢es of Charily trust¢es including.. (il the lldines of thc trustecs pr¢s¢nt JI the m¢¢ting without di4tinction between those who attended in person and th05¢ who aiiended virtually,. (ill the de¢isions made al the meetings; and {iiil wh¢Te appropriate ihe redsons for the decisions. (d) Ilecisi0115 M￿lde by thc charity trustees otl)eTwise thali in ineetinkjs. 25. ACCOUNTING RECORDS ACCOUNTS, ANNUAL REPORTS AND RETURNS, REGISTER MAINTENANCE 25.1 '1'h¢ Charity trustee5 must ¢omply with the requirement% of the Charities Act 2011 with regard to thc kccping of accoLintiiig records, to the prcparation and scrutiny of statements of Accounts, and to the Preparation of annual rcports and rctums. Thc slatcment% of accounts, rcport% and rctllrn% niust bt sent to the Charity Commission, rtgardless of the incomc of the CIO, within 10 months of tlie financial ycar end. 25.2 1-hc chaTity tiu%tees must comply witli their obligation to inforni thc Commis%ion within 28 days of any change in the particulars of the CIO entcrcd on thc C.cntral Regi%tcr tsf C.haTltie8. 26. RUI.r.s Thc charity tru%tees muy from time to tinie miike such r¢asonabl¢ proper rules OT byc laws as they may dcem ncCCs￿ary or cxpedicnt for the proper ci)nduct and manag¢ment of the C.10, but Such rulcs or byc laws rnu%t not bc inconsistent with diiy provisivn of tliis Lonstitution. Copi¢s of dny suLh Tules 01 bye Idws currently in force must be niade dvailable to any meTnbcr vf the CIO reque￿1. 27. DISPUTES If il disputc aris¢s between mcrnbeTS of the CIO about the validity or propriety of anything done by the member¥ under this constitu(ioii. and the di%pute cannot b¢ resolved by agrceinent, the parti¢s to the disput¢ must fiTSt try in good faith to 5eiile tli¢ disputc by mediation before res0rtiM8 to liligation. Page 19

Internatlonal Gyoup for the Psychology of Mathematics Edu¢ation Rtport of the Trusttes for the Period 29 December 2020 t• 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGEMENT Wider network & Amendment of Constitution 28. AMENDMENT OF CONSTITUTION As provlded by elausts 224-227 of the Charitie$ Act 2011: (a) Thi8 constitution Can only bc amcndcd.. (i) by re%oluiion agrced in writing by all mcmbers of thc C.10; or (li) by a resolution passcd by a 75U/o majority of voics ca%1 at a gcncral rnceting of the mcmbers of the CIO. (b) Any alteraiion of clausc 3 {Objccts}, clausc 29 (Voluntary winding up or di%soluiionl. this clausc, or nf any provision wherc the alterdtion would provid¢ authori8aiinn for any bcncfit to bc obtained by charity trustc¢s or mcmbcj of the CIO or perwns connected with them, requircq thc prior written con8ent Thf the c.harity Comrni8sion. (r) No am¢ndTn¢nt that is iAtonsist¢nt with the provisitsns of the Chiiiilies A¢t 2011 OT th¢ G¢n¢rdl R¢gulations shall be valid. Id) A copy of any resolution altering ihe eongtitution, togeiher with a copy of the Clo's con%titutinn ￿ am¢ndcd, must be sent to the Commission within 15 ddyS from the dat¢ on which the resolution 15 pa%sed. The Jm¢ndmeT)t does not rdke effect until li been recorded in the Reg)isler of Charities. 29. VOLUNTARY WINDING UP OR DISSOI.UTION 29.1 As provided by the Dissolution Regulations, thc CIO may be dissolved by resolution of its member5. Any detision by the members to wind up or dissolve the CIO ean only be made: {a} at a gcncral mceting of the mcmbers of thc C.10 called in accordancc with clausc I l (G¢ncral m¢¢tings of members), of which not les% thilll 14 days, noticc has bccn givcn to thosc cligible to attend and vote.. (i) by a r¢solution passed by a 750/11 majority of thoqe volii)g, or {ii} hy a re%alution pas%ed by decision tak¢n without a vote and without any expres8ion of dissent in response to thc que￿]0￿ put to thc gcneral mceting; or (b} by a rcsolution agreed in writing by all mcmbcrs of thc CIO. 29.2 Subject to the payment of all the CIO'S debts: (a) Any resolution for the winding up of the C.10, ar for the di8solution of the CIO wiihoui winding up, may contain a pri)vi8ian direeting how any remaining a￿set% of thc CIO shall be appli¢d. (b} If thc rcEolution docs not contain such a provision, thc charity trii%tc¢s miist decide how any Temaining assets of the CIO Shall be applied. (cl In either cds¢ ihe remaining be applied lor eharitable putposes the saTne as or similar to th05¢ of the cio. 29.3 The CIO must observe the requirements of the Dissolution Regulalions in applying to the Commission for the CIO to be removed from th¢ ReElSter ofcharities, and in p#rticular: lal the ¢hdrily trusie¢s n)ust send wilh their appli¢ati¢)ii lu the CommiSblOn'. (i) a copy of the resolution pass¢d by th¢ memberb olthe CIO. (ill a declaration by the charity trustees that any dEbts alld other liabilities of the CIO have been seltled or othenvise provided for in full., and (iii) a statement by the charity trustees setting out the way in which any properly of the CIO ha5 been or is to be applied prior lo it5 dissolution ill accordaiice with this constitution. (bl the charity trustees must ¢n5ure that a copy of tl)e application is Sent within seven days to cvery member and employee of th¢ CIO, and io any charily trustee of the CIO who was rtot privy to (he application. 29.4 If the CIO L5 to be )vourJd up or di5501ved in any other circumstance5, the provisions of the Dissolution Rtgulation5 must be followed. 30. INTERPRbl'AI'ION In this constitution.. "ConneLted persun" means.. la) a child. paitnt, bJran(Jchild, ￿Trandparent. brother or siStLI of the charity trustee: {b} the spous¢ or civil partner of the charily Iiusiee or of any person fiillingy Wlthin clause 301(il abo)ve', {L) d person carrying on busines5 in partnership wilh the ¢h&riiy irustee 01 with any person falling within clause 30la) or clause 30lbl above., Page 20

International Group for the Psychology of M4thematies bducation Report nf the Trust¢es for the Period 29 December 2020 to 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGF.MENT {d} an institution which is controlled.. {1) by the charity trustee or any connected person falling withiii elausc 30(al, cl#usc 30(b) or clause 30(e) abovc. or {ii} by two or more persons falling within clause 30(dl{i}, whei) takcn together. {¢) a body corporate in which.. {1) the charity trustee or any connected person fdlling within clause 30lal to ¢lau8¢ 30(¢l hdb a substantliil int¢r¢si', or {ii} two or Tnore persons falling within clause 3(Kelli) who, when taken tog¢ther, have a subslaniial interest. SeLtion 118 of the Charitie% Acl 2011 apply for the purpo%es of int¢rpretinLTr the t¢mis Use¢J in this constitution. "General Regulations" meanb the Charitable Incorpoiuted Oig<inisations IGen¢rdll RegJulatiOTbS 2012. 'Dissolution Regulations" mean5 ihe Chaiitable Incotporated Organisdtioiis Ilnsolv¢ncy and Di5501ution) Regulations 2012. The 'Conimunication% Provisions" means ihe Communications Provisions in IPart 10, Chapter 41 of the General Regulations. 'Charity trnstee" means a eharity trustee ofthe C.10. A "poll" n)eans a counted votc or ballot, usually (but not necessarily) in writinb. "I'he Fornier IGPMF." mcans The Intcmation21 Grollp for the P%ychology ol. MathematLC5 Education (abbreviated to PML.) being a group of rc8earch¢rs first cstablishcd in 1976 at ihe Intcmaliondl Congress on Mathematics Education, whose Constitution a9 an unincorporated organisdtion was adopted by its Annual Gencral Mccting on the 17th August 1980, changcd by thc Annual Gcncral Meeiings on the 24th of July 1987, on 10th of August 1992, on thc 2nd of Au8USt 1994, on the l 8th of July 1997, on th¢ 14th of July 2005. and on thc 21 st of July 2012, and which is succccded by this cio., 'Hybrid meetlng" means a meeting of membcrs of the charity or a rneeting of th¢ charity trustec8 at which some participants are attending the meeting in p¢rson and others are attending virtually 'Virtu&l Theeti￿¥" mcans ¢1 mc¢ting of members of the charity or a mceiing of the ¢harity trustecs whcr¢ arrangcm¢Ms have bccn madc in advancc to allow participants to att¢nd tl)e mecting by mean5 of a confcrence telephonc, vidco link or similar mcans of clectroni¢ communication at which all participants can bc hcard and can hear cach other without the need for them to b¢ physically present at the same location. A person participating in tt mecting by %uch means shall bo de¢Tned to b¢ attending virtually. Page21

International Group for the P$ychology of Mathematie8 Edueation Report of the Trustees for the Perind 29 December 2020 to 31 December 21b21 STRUCTURE, GOVERNANCE AND MANAGEMENT Related parties 6. BENEFITS AND PAYMENTS TO CHARITV TRUSTEES AND CONNECTED PERSONS 6.1 General provlslons No Lharity trustee or cOnn￿t¢d p¢rson may.. {a) buy or re¢¢iv¢ dny goods or services froni the CIO on ienns preferential to those applicable lo members of the publi¢; {b) sell goods, serviL¢s, or any interest in land ¢0 th¢ LIO; {¢) b¢ ¢mployed by, 01 receive any remuneration from. the CIO,. {d) r¢c¢ive any oiher financial benefit from the CIO., unless ihe payment or bejiefil is permiiied by clause 6.2, or authoTib¢(I by the court or the prior wrjrten conseiit of the Charity Commission { the Cojnmission") hds been obtuined. In this clause, a 'financial bellefil" means a benefit. direct or indirect, which is ¢ither money or has a monetary Vdluc. 6.2 Scope and powers permitting trustee5' or coNnected persOn5' benefits {a) A ¢h4rity trustee or ¢oniieeted person n)ay receive a beiiefii from the CIO as a beneficiary provided that it is 4vailable generally to tlie beneficiaries of the CIO. {b) A charity trustee or connecled person may enter into a ¢ontract foT the supply of services, or of goods that are supplied in connection with the Provision of seTVlC¢S, to the CIO where that is pemiitted in accordance with. and 8ubject to the conditions in, ￿ctIon 185 to 188 of the Charities Aci 2011. {c} Subject to clau5¢ 6.3 a charity trustee or ronnecied person may provide the C.10 with Boods that arc not 8upplicd in connection with 5ervice5 provided to the CIO by the chaiity trustee or COllDected person. {d) A charity tIUSt¢e or ¢onnerted person tn4y receive rcnt for premise8 let by Ihc trust¢¢ or ¢onn¢ct¢d p¢rson to th¢ CIO. The amount of the rent and the other terms of the lea8e mu%t be reasnnable and prop¢r. The charity trnstee concerned must wiihdraw from any meeiing at which 8uch a proposal or th¢ r¢nt or oth¢r temi$ of th¢ l¢asc are und¢r discussion. {e) A charity trustee or cont)e¢ted person may take part in th¢ nornial trading and fundr4i8in8 activitic8 of the CIO on the 8arne tern)s as members ofthe public. 6.3 Payment for supply of goods only controls lThc CIO and itg charity tru8t¢¢s may only rely upon thc authority providcd by clause 6.2(c) if each of The following conditions i% %atisficd.. {a) Th¢ amount or maximum amount of thc paynieTrt for tlie goods 14 set out in a wriitcn agreemcnt b¢tween the C.10 and the charity tru8t¢c or eonrtcctcd pcrson %upplying thc gDod8 ("the supplicW'). (b) The arnount or maximum amtsunt of the paymeni for ihe goods ijocs not excccd what is rea8onable in the ¢iwurnstan¢¢s for the supply of thc goods in qUCSlioD. (c) -rhe other ¢harity tTusiees are satisfied thdi it is in the best interests of ihe CIO to contTaCt witl) the %upplier rath¢r than with %omeonc who is not a Charity tru8tec or conncctcd pcrson. In rcachin¥ that decisiun th¢ Lhdlity ttUSt¢¢b tnusi balanec the advdniage of contracting with a charity tru%tcc or conncctcd peTSOn against the disadvdnia&?es of doiiig) so. (d) The $upplier i8 absent from thc part of aiiy rneetinLI 4Lt whiLh there is discu&bion of the proposal to ent¢r into a contract or arrangcmcnt with him or her or it with regdrd 10 ihe supply of go(xls ILI th¢ CIO. (e) The ￿upplier docs not vote on any such matter and is not to be ¢ount¢d when calculdtingT whether a quorum of charity trustees Is presen¢ at the me¢iing. (f) Thc rea￿n foi their decision is recorded by the chdTlty trust¢¢s in tli¢ minute book. (g) A majority of the charity trUs￿eS then in office ar¢ not in recehpt of r¢muneration or payments duthorised by Llause 6.(B¢nefits) 6.4 In el#tsse.2 #nd Llaus¢.3: (a) "The CIO" includes any ¢ompany in which the CIO.. (il holds more than 500/0 ofihe shares; or (ill controls mor¢ ihrfin 50/0 of th¢ voting righis allachcd to thc sharcs; or (iii) has the rigyht to Jppoint on¢ or mgr¢ directOTS to Ihe board of the coinpany. (b)"Conneeted person" includes any person within th¢ d¢fiTrition set out in elause 30 (Interpretation) Page 22

Internatio￿41 Group for the Psychology of Mathem4ties Education Report of the Tru5tets for the Period 29 Deeembcr 2020 to 31 Dcccmbcr 2021 STRUCTURE, C.OVERNANCE AND MANAGEMENT 7. CONFLICTS OF INTF.RF,ST AND CONFLICTS OF LOYALTY 7.1 A charity tru5tec must.. (a) declare the nature and extent of any interest, dir¢ct QT indirect. which he or sht In d proposed tranS￿tion or arrang¢m¢nt with th¢ CIO or in any transaction or arran¥ement entered inio by the CIO which has not previously been d¢cldr¢d: and {b) absent himself or herself from any discussions of the ¢ha¥ily trusiees in which it is postsibl¢ that a conflict of interest will drise between his or her duty to act bolely in th¢ interes1% of the CIO dnd any persos]al inlerest Ihncluding but not limited ￿ any financial interest). 7.2 Any chArlty tru$tee obsenting himself or herself from any di5CL15SiOMS accorda￿Ce elause 7.1 must not vote or be counted a$ part of the quorum in any decision of the charity trustees on the matter. 8. LIABILITY OF MEMBERS'fo CONTRIBUTF TO TIIE ASSETS OF THE CIO IF IT IS WOUND UP If the CIO is wound up, the Th¢ml)ers of the CIO have no liability to ￿ntrIbute to its assets and no personal rcsport8ibility for settling its dcbt% and liabilitics. REFERENCE AND ADMINISTRATIVE DETAILS Reglstercd Company number CE024473 (F.ngland ahd Wales) Rcgistcred Charity numbcr 119932 Registered office Bristol Business Centre Mailbox 314 179 Whiteladies Road Clifton, Bristol Avon BS8 2AG Tru5te¢$ Prof Di A DTeheT- Professor (resigned 22.7.22) Prof A A E5sien- University ProfessoT (resigned 22.7.221 Dr J A AnderboTr- Retired (resigned 22.7.221 Dr C Fernaiidez Verdu- A550Ciate Professor Dr Y Abiahi - University Prof¢5501 Dr A Bo%e- A8qociale Professor Dr J M R Flunlcr- As%ociatc Profc&sor / Secretary Dr T J Helliwcll - Senior l.ccturer / Trca8urer Dr B H Choy- Assistant Profcssor (appointcd 22.7.21) Ms M H JOhan￿80n - Scnior Lccturcr lappointcd 22.7.211 Prof C. Andra - Associate Professor {appointed 22.7.21) Dr K Komatsu- Associate Professor Dr C. M Krause - A8si%tdi)t Profe￿￿or (appointed 22.7.21) MTS M Ayalon Scnior Univcrsity Lccturcr {appointed 22.7.21) Dr D C. Sommethtsff - UniveTsity Prof¢8%oT (appointed 22.7.21 } Dr W Van Dooren Profe%%or / Prcsidcnt from 22.7.22 {appointcd 7.10.21} A Prof Dr M Inprastiha- Univer%ity Administrator (rcsign¢(122.7.22) M S Hdniiul4- Profe550r I Pre&id¢nt till 22.7.22 (rcsigncd 22.7.22) Prof W T Seah {&ppointtd 22.7.22) A R Strvhmaier lappoiiJted 22.7.221 Dr N Hudkuwski Idppointed 22.7.22) Dr N A Roberts (appointed 22.7.221 Page 23

International Group for the Psyehology of Mathematics Edueatio Report of the Trustees for the Perlod 29 Deeember 20211 to 31 Deeember 2021 REFERENCE AND ADMINISTRATIVE DETAILS Company Secretary DrJ M R Hunter Independent ExAmlner Martin Arthur FMAAT, AFA, FIPA. FFTA, MIH. MCIE. Accountancy Co-operative 56 DoichestEr Road Lytchett Minster Poole DoT5Ct BH166JE Bankers Barclay8 Bank plc Thame Branch Leieester Leistershire LE87 2BB Approved by ordcr of the board of trnstces on 18, Octobcr 2022 and sign¢d on its behalf by.. Dr W Van Dooren- Trustee Pag¢ 24

Independent F.xamlner's Report to the Tru$tees of International Ciroup for thc Psychology of Mathernatics Educgtion Independent txaminer's report to ¢h¢ trMstee5 of International Group for the Psychology of Mathematles Education {'the Company,) I report lo the churity trusteeq on my ¢xarnination of the accounts of the Company for the period 29 D¢¢ember 2020 to 31 Deccmbcr 2021. Re5pon5ibilitie5 and basis of r¢por¢ As thc chdTity'S tru4tccs of the Company {and also its directors for the purpos¢b of ¢ompdny law) you are responsible for the preparation of the aLcounts in aceordance with the requirements of the Companies Act 20061'the 2006 Act'}. Having satisfied myseifthat the accounts of th¢ Company are not Tequired to be audited under Part 16 of the 2006 Act and ar¢ ¢ligible for independent examination. I report in respcLt of my exaniinatioll of your rhaiity'5 ar¢ount$ as carried oul under section 145 of the Charities Act 2011 ('the 2011 Acl'}. In CdTryillg out my exailliniltiun I hiive followed the Directiolis given by the Charity Cummission under section 145(51 (bl of the 2011 AGt. Independent examiner's stxtemeMt I have coinpleted Iny exiiftiination. l ¢onfim) that no matters have come to my attention in conTbection with the examination giving nie cause to believe: accounling records were not kept in respect of the C.onipany as rcquircd by scction 386 of thc 2006 Act; or the accounts do not accord with thosc rccords: or the aecounts do not comply with the accounting rcquirements of s¢ction 396 of the 2(M)6 Act other than any rcquirement that the accounts give a truc and fair vicw which is not a matter considcred as part of an independent cxamination- or thc accoiint.% have not been prepared in aecordancc with the mcthods and principles of the Statcment of Rccommcnded Prdctite for aceounting and rep(>rting by charitics (applicablc to charitics prcparing th¢ir account8 in accordance with the Fii)ancial Rcporting Standard applicable in the UK and Republic of Ireland IFRS 102)). have no conccms and have ￿me across no other matters in collfftectioll with thc cxamindtinn to which attention should be drdwn in thi% report in ordcr io enable a proper underqtanding of the accounts to be reached. Martin Arthur FMAAT, AFA, FIPA, FFTA, MIH, MCIE. Accountancy Co-op¢r8tive 56 Dorchester Road Lytchett Minster Pvole Dorbet BH166JE Date.. Page 25

International Croup for the Psychology of MatlJematie8 Education Statement of Flngjneial Activitie$ for the Perlod 29 December 2020 to 31 Detember 2021 Unrestricted funds Restricted funds Total funds Notes INCOME AND ENDOWMENTS FROM Donations and l¢gacie$ 4,649 4,649 Other tTrdin¥ activities 21 21 Tot41 21 EXPENDITURE ON Charitable activitie$ Conferen¢¢ Planning Costs NET INCOMEIIEXPENDITURE) 51,9SS (Sl,934) $3,399 (48,729) 3,205 TOTAL FUNDS CARRIED FORWARD 3.205 4X,72YI The noteb fom part ofthese financial statemellts Pa8¢ 26

InternatioT]81 Cjrnup for the Psyehology of MathtmAtles Educltlon Bxlanfe Sheet 31 December 2021 Unrestricted funds Restricted funds Total funds Notes CURRENT ASSETS Cash ai bank 50,082 12,658 68,741 CREDITORS Amounls falling due within one year 2,069 3,205 5,274 NET CURRENT ASSETS TOTAL ASSETS LESS CURRENT LIABILITIES 58.151 15,863 74,014 NET ASSETS 5&151 15,863 FUNDS Unr¢slri¢ted funds Restricted funds TOTAL FUNDS 74,014 The charitable company is entitled to exemption from audit under Section 477 of the Companies Act 20(16 for the period ended 31 December 2021. The iknanbers have not required the company to obtain an audit of it5 financial statements for the pcriod cnded 31 tkccmbcr 2021 in accordancc with Scction 476 of the Companies Act 2006. The trustccs aeknowledgc their rcspon5ibilities for {a) ensuring that the Charilablc company kc¢p5 aectsuntrng rccords that Comply with Sections 38fi and 387 of thc Companies Act 2006 and preparing financial stat¢ments which give a ¢we and fair view of the slate of affairs of the charitable company as at the end of cach financial y¢ar and of its surplus or d¢ficit foT each financial ycar in accordancc with th¢ rcquircrnents af Scction8.394 and 195 and which otherwise comply with the requiremcnts of the Companies Act 2006 Telating to financial statements, so far as applicablc to the charitsble company. (b) These financial statements hav¢ b¢¢n pr¢pared in accordan￿ with the provisions appli¢able ¢0 ¢haritable ¢omponies subject to the small compani¢8 Teginie. The finai)Lial slatementb were approved by the Board of Trustees authorised for is5u¢ on 18 OdobeT 2022 and were signed on it5 behalf by.. W Van Dooren - I'rustee The notes fomi part of these financial statements Page 27 4)

T J I lelliwell --frustee The notcs forni part of thesc financial siatenicnts Pa¥e27 b)

Internationthl Group for the Psychology of MAthem4ties Education Notes to ¢he Financial Statements fTrr thc Period 29 Dccember 2020 to 31 December 2021 ACCOUP4TING POLICIES Basis of preparing the fin4D¢ial statements The financial stat¢ments of th¢ chdTitdble compuny, which is a publiL benefit entity under FRS 102. have been pr¢pdred in accordance with the Charities SORP (FRS 102) 'AccuuntinbT and Rtporting by Charities.. Ststement of Recommended Practice applicable to charitl¢S Preparing th¢iT d¢counts ill accordance with the Financial Reporting Standard applicable in the UK and Republic of Ireland (FRS 102) letTectiwe l Jdnuary 2019),, Financial Reporting Standard 102 The Financial Reporting Standard m eorporation tax on its charitablc Rctivili¢s. Fund aCcounti￿g UnrestTietcd fuiid5 can be used in accordance with the charitable objcctives at the dis¢retion of th¢ tnLSte¢s. Rcstricted funds can only be used for particular restricted PUTPO%CS Within th¢ objects of the charity. R¢stri¢tions arise when 5pccificd by thc donor or whcn funds arc Taiscd for particular re$tricted purposes. Furthcr cxplanation of the naiure and purpose of each fund is included in the not¢s to th¢ financial stat¢m¢nts. OTHER TRADING ACTIVITIES Rayalties 21 TRUSTEES, REMUNERATION AND BENEFITS TherL were no irusiees. remun¢tation or other benefits for the period ended 31 D¢¢¢mber 2021. Trustees expenses There were no trustee&, expenses paid for the period ended 31 De¢ember 2021. Page 28 continued...

International Group for the Psychology of MathematlC5 r.ducation Notes to the Financial Statements- eontinued for the Period 29 Dcccmber 2020 to 31 December 2021 FUNDS: AMOUNTS FAI.LING DUE WITHIN ONE YEAR Dank loans and overdraftslsee not¢ 5) Accrua15 and deferred income 5,709 (10,9113) 5,274 FUNDS OVERDRAWN An analysis of th¢ maturity of funds overdrJwn iy ¥iven below.. Amount8 falling due within one yeaT on demand.. Bank overdTafts 5,709 MOVEMEP4T IF4 FUNDS Net mov¢m¢nt in funds At 31.12.21 Unrestricted funds Gcn¢ral fund Conferencc Fund (5,708) 63.859 1ty,70¥1 58,151 58,151 Restricted funds 8kemp Donations Fund Africa Continent 4,961 10,902 4,961 10.902 15,1163 TOTAL FUNDS 74,014 74,014 Net movement in funds. included in the above are as follows.. Incornin8 rc%our¢c Resources expended Movement in funds Unrestricted funds Gcncral fund Conference Fund 21 110085 (5.729) 46,226 (5,708) 63,859 110,106 {51.955) 58.151 Restricted funds Skemp Donations Fund Africa Continent 6.405 10,902 (1,444) 4,961 10,902 17J07 15.863 I'OTAL TrUNDS 127 413 53,399 74,014 Pdbye 29 eontinued...

Intcrnational Group for the Psychology of Mathematics Education r4otes to the FinAncial St8tements- continued lor the Period 29 December 21120 to 31 December 2021 RELATED PARTY DISCLOSURES There were no related patty transactions for the period ended 31 December 2021. Pag¢ 30

Intsrnational Group for the Psychology of Mathematics Education Detailed Statement of F5nancil Aetlwlties for the Period 29 December 2020 to 31 December 2021 INCOME AND ENDOWMENTS DonAtio￿8 and legael DonatiOE)s received inc Skemp 4.649 Other ¢rding activities Royalties 21 Charitable activitie¥ Conf¢Tenc¢ regislration fees Conferenc¢ Fund5 S4,(K13 6¥,741) 122,743 TotAI incoming resources 127,413 EXPENDITURE Charitable a¢t5vi¢ies Grants to institutions 1,444 Support cost5 Management Conference costs Advertj51ng & web51te update5 29,132 152 29,284 Information technology Online conference facilities 17,094 Covern8nee c05t5 Honorarium- Adminislrator Po8lage and stationery Legal fees 3,513 264 Total resources expended 53J99 Net income This pag¢ does not fomi part of the ststutory financial staternents Page31

REGJS"I'ERED COMPAIYY f4uMBER: CE024473 (England and W*les) RF,GISTERED CHARITY NUMBER: 119932 Report of the TrustevJ 8nd Unaudited Finaneial Stwtem¢nts for the Period 29 De¢ember 2020 to 31 Deeember 2021 for International Group for the Psychology of Mathernaties Educ#tion A¢¢ountsncy C.o-operativc 56 Dorchester Road Lytchett Minsrter Poole Dorset BH166JE

Intern8tion81 Croup for the Psychology of M¥thern8tic8 Edueatio Contents of the Fin8ncl81 St8trments (or the Period 29 December 2020 to 31 Deeernber 2021 Page Management Report of ICPME Op¢r8ting and Financial Review Report of the Trustees 3 to 24 Ind¢pendent Ex4miner'$ Report 25 Statsment of Fin4ncial Activities 26 Balauee Sheet 27 Notes to the Finan¢i*l Statement5 28 to 30 Detailed St&tem¢nt of Fin&nci¥l A¢¢ivities 31

International Croup for the Psychology of Mathematles Education Mana¥eTnent Repoi* of IGPME for the Ptriod 29 Dcccmber 2020 to 31 Deeember 2021 On D¢ceTnber 29, 2020 IGPME received a mebsage from the Charity Comtni55ion, notifyiiig ihat IGPM& has been acccptcd as a CliaTTtdblt Incorpordted or&F￿lS￿li￿n under UK law. This completed a long proccss to egtablish a legal foundation for IGPME as an urgdni£alion. In 2021, the IGPME Board ol. Trutstees Ithc International C.omrnittcc, IC, in what follows) has b¢en lcdrning about the details for running its adminibtration in accordance with UK laws. The orgdnizatioii is governed by a constitution that bp¢eifies tlie procedures for clcctions, voting on proposals and oth¢r fundameiitsl regulationb aboul the fun¢tioning of Oklr organizÉi¢ioll. The constitution can bc changed only via a votc of lh¢ iiienibersliip at ail Ai)nual GEneral Meeting {AGM). Election5 for Pre%idcnt and ncw International c.ommittee Inembers tdke place at thc AGM, held near the end of each Annual C.onfercnce. In addition, proposals for major d¢cisigns are PTcsellted. disius￿￿ and voted on at the AGM. A Polity Mceting is held for open discussion of issues durin¥ ihe week prior to Ihc AGM. I'he IC is responsible for adD)inist¢ring th¢ affairs of the Group, including ov¢r%ight of the Annual Coi)fer¢ncE and of the Group's finances. I'he IC. hag 17 mcmbers, including an Executivc Committc consistins of Ptesidenl, Vice President, Secrctsry. .1 rca%ur¢r, and tlic Policy Chair. The Prcsidcnt is for a 3-ycar temi. otli¢r Theiiibers are elected for 4-ycar ternhs. with tour mciiib¢rs Tcplaced tach year via election by thc mcmbcTship. IGPME also has dn adn)inistrative inanagcr (AM}, who takes carc of many runnit)g issu¢s ijf the organization. Our previous AM Birgit Cjriesc reiired froni thc po%ition in 2021 and in November 2021 IGPME appointcd Angateeah Kheniduth Singh as the new Administrative Managcr. BeKaiisc of thc pand￿￿1¢, the IC and executiveb had only i)Mline nieetings in 2020 and 2021. In 2020, th¢ IC had 2 m¢ctings and thc cxccutiwes had 16 rneetings. Ill 2021. the IC liad 7 rn¢ctin¥¥ and the executiv¢s had 6 me¢tin8S. AGM for 2020 and 2021 were organized as online Tneetin¥s. ¢v¢n if ihib Wds not ¢Xli¢tly according to our constitution. Thesc mcctirtgb had 71 and {cir¢al 150 participdting men)berb. respectively in 2020 and 2021. Th¢ decision to have the AGM as an online meeting wa% llndnimoiisly agreed by all participants in th¢ AGM. In 2020 we decided to not organize an election of new IC niembeis. Inst¢ad, the IC nominaied trusttees for one year an(i postponed the election of new trustees foi on¥ year. having 8 trusteets retlTill8 in 2021. In 2021. 8 new trustees werc elected, wilh 156 tnemberb 8ivin8 their votrs. IGPME dlso oruiani£ed an extraordinary kT¢I)¢Tdl mKting onliii¢ in O¢lober 2021 with 35 participants. In this m¢¢ting Wim vJn D(￿ren W<lS votsd to be the IGPME presidei)il¥r5 from diffe￿nt part% of the world ¢stabli%h ¢ollaboTative netWQTk.% to further our colleotive undcrstandillg of how to irnprove mathematics education in thcir rc%pectivc countries. providing grants to help bring scholars from Under-rep￿enIed r¢gions of th¢ world to our annual meeting. di%scminating our research for ihe benefit of improving matliematic% cdllcation at thc cla88room, gehool, district, and natioiial Icvcl%. di%8erninating our research for the benefit of improving studenls, experiences with mathernatics education at the ¢10gsrnom, school. dislricr, and national lev¢ls. di%8cniinlltiiig our research for the benefit of improving Ihc preparation of matheniatlcb teachers at the univer51ty level around the wgrld. prvviding iiccess to oui iesvdTch publications to the public. Page I

Int¢rnationAI Crroup for the Psy¢hology of Mathernatics Educatio Operatlng and Finthneial Rtview for the Period 29 Decetnber 2020 to 31 Deeember 2021 Ach5evements of IGPME In 2021 B¢causc of thc COVID-19 pandemic, ICJPME xctivilieg liave been s¢veiely compromised. IGPME could not organi2e its yearly onsite cOnf¢r¢n￿S for 2020 and 2021 as pldnn¢d. For 2020, IGPME ¢anc¢ll¢d thc y¢arly ¢onferen¢c, bui organized a mole limited Virtual meeting instead, hosted by Khon Kaen univer4ity,-l-hailand. Th¢ virtual niectiiig hJd 312 participants. In 2021. IGPME decided to organizc the confercncc oiiline. The conf¢ren¢e was organiz¢d iogeiher by Khon Kaen university, Thailand and Tcchnion univer￿ltY, Isracl. Thc number of 2020 and 2021 qubmiltcd RR proposals wa.% 296, and 146 of thcm wcrc acecptcd. Of tho8e rejected a% RR proposals, -14 wcre invited to be rcsubmittcd as OC. and 13 SS PP. Thi8 virtudl mccting had 262 participant In 2021 PME also organizcd a series of six online mectings for Early Re%carch¢r¥. The8¢ talks wcr¢ comdutted at different time zoncs to cater to diffcrcnt regions of the world. The preparatiOTbS for the 2022 conference have been ongoing, and IGPME organizes PME45 in Alicante. Spain on 18-23 July 2022. The PME46 will be or8aniz¢d in July 2023 in Israel. In 2023 a regional conf¢r¢n¢e will be organized in Thailand. To advanLe sLi¢ntific discussion and dibsemination of scientific findiiigs. IOPME will host and share keynote prts¢ntations online in ihe coming conferen¢¢s. IGPME hds examined and resolved the r¢lat¢d l¢gal and iechnical 155ues. IGPME has d¢v¢lop¢d a proposa] for a publication ethics statement for th¢ ¢onferen¢e procecdiiigs ol. PME. Besides the idea gf do¢umenting the high stdniJdrd& of PME publiuiion pr£letice, a publi¢ly availdble publication eihies stateinent is a n¢ces8ary condttiun for gettingF PME public£ltlOll5 indexed in Scopus. This proposal Also awaits approval at the AGM. PME Finance5 Despite having to cancel conferences, th¢ IOPME financial situation is While our incom¢ d¢Llin¢d due to having rewer membership fees, also our costs on travel and #ccvmmoddtion were reduced. Th¢ Iredsur¢r hab pf¢pdred a more detailed report on IGPME finan¢e$. Due to Covid TeStTiCtions, our 2020 accounts got delayed. H¢nce here, we report on PME finances both for y¢ar¥ 2020 and2021. Our main sour¢c of income is the conference registratioll fee from our membership, which Consists in membership fee, donaiion to the Skemp fLind, and tl)¢ conference fee. ATound IO% of our incomc is collceted a% Skcmp fund to be donated as travel and confercncc fee qupport, to participants in nced. IGPME hELS continued to suppo11 r¢warcher% fri)m undcrrepre8ented countries to Come to conferences with grants from thc Skemp FuT]d. In 2021 IGPME gave grants to I I rcscarchers covering ihe cost of their parricipation the 202110 2021 onlin¢ confer¢ne¢. Further information IGPME website.. httPs.'Jlwww.igpme.orgl PME44 website.. https'.Ilpme44.kku.d¢.ththomel PME45 w¢bsit¢'. http￿..}1web.Ua.esIpMe4sI Pag?e 2

International Group lor thc Psy¢hology of Mathematles Eduefition Report of the Trust¢e$ for the Perind 29 December 2020 to 31 December 2021 Thc trustc¢s who arc a180 directors of thc charity for thc PUTPQSCS nf the Companies Act 2(X)6. present their r¢port with the financial statements of the charity for the period 29 Dcccinber 2020 to 31 DeLen)ber 2021. The trust¢¢s have adoptcd the provisiLin% of Accounting and Reponing by Charities.. St&lernei)t of Recommended Pra¢ti¢¢ applicable to charitic% prcparing their a¢¢ounts in d¢cordanc¢ with the Financial R¢porting Standard applicabl¢ in the UK and Republic of Iroland (FR% 102) (effective l January 2019). INCORPORATION Tlie ¢haritabl¢ conipany was inco￿Orated tsn 29 De¢emb¢r 2020 and comnieneed trading on the same date. OBJECTIVES AND ACTIVITIES Objectives and aim$ 3. The objects of the CIO are to advance the field of mathematic& education lor the publie benefit by: proinoting and Stil￿UlatIng research. Orgaiiising Tegular education(Il ¢onferen¢e% around thc world. supporting Tegional workshops Around the world in gcncral, and in undcr-rcprescnicd rcgions of thc world in particular. collaborating witli organisations with simi14T aims. facilitating ¢ro*s-di%¢iplinary discus%ion and thc %h3ring of infornlation and rcbearch with an inicmational cmphasis. h¢lping wholars fmm different parts of the world cstablish collaborative networks to fvrther our collectiv¢ undcr%tanding of how to in)prove mathematics education in thcir respcctivc callntrics. providing giant% to help bring scholars from under-representcd regionb of the world to our annual me¢tinb. disseniinatiTbg our research for thL benefit of improving mailiernatics education at the classroom, school, district, and national levels. dissen)inating our research for the benefit of improving %tudents' ¢xp¢rienc¢s with mathematics educatlgn ut the cliiN%ruom, SLhool. di4triLt, and national levels. disscrninating our r¢s¢areh for the bellefit of in)proving ilk preparation of mathematics teachers at the university leyel around thc world. providing access to our res¢ar¢h publications to the publi¢. Nothing in this constitution sh411 authorise an application of the property of the CIO for the purposes which are Dot haritable in aCcord￿ce with section 7 of the Charities and Trustee Investment Iscotldndl Act 2005 and section 2 of the Charilies Act (Northem Ireldnd) 2(K)8. Pagc 3

International Group for tbe Psychology of Mathematics Educatio Report of the Trustees for the Perlod 29 De¢¢mb¢r 2020 to 31 D¢cemb¢r 2021 OBJECTIVES AND ACTIVITIES Significant activities ¥nd upplie￿tIon of inL*ffte #nd pruperty 4. POWERS The CIO has power to do anythiJ]g which is Gqlculated to further its objects or is COTKlucive or inLidental io doing so. In PZ4rticular. the CIO'S powers in¢liide power to.. (al borrow mon¢y and to charge thc whole or any Pdrt of its property us %e¢urity for thc repaymerti of th¢ moncy borrowcd. The CIO mu8t comply as appropriatc with sectlOll8 124 and 125 of thc C,haritie8 Act 201 l if it wishcs to mortgagc land. (b) buy. takc on lease or in exchange, hirc or othtTWiSe a¢quire any propcrty and to maintain and cquip it for US¢. 1¢) scll. Icase or otherwi%c disposc of all or any Pdrt of thc propcty bclonging to the CIO, In exercisillg this power, the CIO must cort]ply as appiopriate with sections 117 and 119-123 of the Charities A¢t 2011. {d) employ and remunerdte such siaff as are necessary for carrying out the work of ihe CIO. The CIO may employ ur r¢mun¢rate a ¢hdTlty Irusle¢ only lo the extent that it is permitte(i to do so by clause 6 (Benefits and paymenis ts) charity trust¢¢4 and conne¢ted p¢rsonsl anJ provid¢d it Loji)pli¢s With the conditions of those clauses. (e) deposit or invest funds, employ a professional fund-manager, and arrange for the illvesknnents or other property of the CIO to be held in the name of d nominee. in the Sdme manner dnd subjeci to the same condiiions as the trustees of y trust are perniilted to do by the TrJstee Aci 20(Kb. 5. APPLICAI'ION or INCOME AND PROPERTY 5.1 Th¢ incorne and property of th¢ CIO ivjust be Jpplied solely towards the promotion of the objecls. (a) A charity trustee is entitled tg b¢ reimbur8ed Irom the property of the CIO or rnay pay out of such property reasonable expenses properly incurred by hini OT her wheii acling on behalf ol- the CIO. {b) A charity trustee may benef)t from trustee indemnity insurance cover p￿reh￿Sed at the CIO'S expens¢ in ac¢ordance with, and subject to the conditions iii. section 189 ot the Charities Act 2011. 5.2 None of the income or property of the CIO may be paid or transferred directly or indirectly by way of dividend, bonus or otherwise by way ol- prolit to any member of the CIO. Tl)is does nol prevent a memb¢r who Is iiot Also <1 charity trustee receiving.. (a) a benefit from the CIO as a bei)eficiary of the C".10. {b} rcasonablc and proper remuncTation for any goods or %ervices Supplied tts tlie CIO. 5.3 Nothing in thi% clausc shall prcvcnt a charity trustec or conncetcd person recciving any bcncfit or payrnent which is authorised by elausc 6. Pagie 4

International Croup for the Psychology of Mathem4tles Educatio Report of the TTUStets for the Period 29 Deeembcr 2020 to 31 December 2021 OIIJECTIVES AND ACTIVITIES Public benefit Purpnsos public bcncfit (Part l) (a) What IGPME doe5 and hvw- The Int¢rndtiondl Group for the PSycholo￿Y of Milthemalics Education organizes an annual conference in collaboration with the local organiieis. PME finds a capable local organizer and makes an agrtcnicnt with thcm about organi7.it)g thc conlerence in a way that guarantees the scientific quality of the pr()gram and prcscrvcs thc ci)Ilabor&tivc and in¢lusiv¢ spirit of PME. PME sElects mcmbcrs to thc international prograni coimmittec of the conference that is responsibl¢ for tl)e scientific progratn of the ¢onferencc. Pmb also providc% financial guarante¢ in casc of a 1088 for organizing the conference and whei) thc coiJfcrencc makes surplus, thc surplus 1% donat¢d for PME. As an outcome of the ycarly conferellce thcre is a proceeding% of the scicntific papcr%, whieh PME publishe5 online freely for aiiyonc to rcad. 'I'hc %cicHtific aciivitics and rcscarchcr llctworking ilt the conference often lead to ¢ollaboraliv¢ publications. Tc%carch projec18. and collaborativ¢ projccLs for mathcmaties cdueation development or Provide %upport for Similar activitie.% that have %tarted elscwhcrc. PME also organi7.es publication of scientific books. So far, PME has publish¢d two handbooks sun)marizing the scientifi¢ output of PME activitics. PME conference fee in¢lude% a donation to Skemp Fund that provides scholarships for mathematics education researchers wlio cgme from underreprebented countries and are facing finaiiLidl or other difficultie5 Ihdt tnltke their partlClP¢ition to inlernaiional wnf¢r¢nc¢s difficult. A subcomniittee nominated by the board of truste¢s decid¢s which of the applicants will receive grants. PME help5 finding academic support foT writing a PME ¢QTbference Pdper for those eaTly career researchers who are strugglii)g with academic English or have not sutTiciently ¢xperienced supervisor in their own institute. The sU￿[uS frgm yearly confeiences has been used for supporting) regional conferences in areas where few researchers have beeii actively engdged wilh PME activitie5. So far, ¢he5c regional ¢onferences have been organized in Ch ile and Russia. PME supportb also other special prujects. Both rtgioiial conferenceb aiid special projects are funded based on application. The board of tTU5t¢es- or, in case of funding over 5 OOOe, the AGM - decides which projects to fund. Ib) IGPME'5 purpose 15 beneticial- Historically, rescarch into thc tcaching and Icarning of mathcmatics was carried out either by mathematicians or psycl)ologi8ts, with little eollaboration or intcrdction bctwcen thc two di%tinct di8ciplinary groups. PME brings the%e groiip.% togethcr, tLI form an international Te%earch c£)mm4Jnity %tronger th7￿ n thc sum of its parts. The public bcncfit of PMF. is thc advanecmcnt of cdiication. All s()cieties bclicwe thai education bcnefits both the individual learner and qoeieiy at large, by contributing to eeononiic proipcrity and also lo thc cultural and Spiritual wcll-bcing of 50cioty. 'I'hc ultimate pUrp￿￿e of all rC￿earch in thc field of mathematics education 18 to improve the qualTty of mathcmatic8 instrllctioll at all pha￿c$ of cducation and in all cdiicational Settings. thcrcby to understand and improve the quality Lif studenL%' experience of learning mathcmatics and thcir enjoymcnt and mastcry of the subject. The Icasons for thi% cndcavour include thc cconomic prosperity of nations and iheir ability to comp¢te internationally, as well as to promote the well-being, iniellectual and aesthetic fulfilment of individuals, and th¢1¥ ability to enbfii¥e in and contribule to (l)e cultural life of their communilies. Mitthematics, perhaps more than any other School subject, Icaves a large part of the UK population with f¢elings or disdffection, ali¢nalion and h¢lpl¢bbnes5. It is socially accepiabl¢ to c14im that on¢ is 'no good ai mdths when nobody would admit to being unable to read (Sliy) with the same ¢qiianimity. This has consequ¢n¢¢s for individual autonomy and for the UK economy. Pag¢ 5

International Croup for the Psychology of MathematlC5 Educstion Report of the Trustees for the Period 29 December 2020 to 31 December 2021 OBJECTIVES AND ACTIVITIES Th¢ improvement of mJthematics teaching and learning is tackled on several fronts. but research in math¢matics educalion underpins lor should underpin) dll of ihem. This goal is evideni in the diverse dclivlties of PME, sucli those focusinb) on.. mltihemittics dida¢iics (the syst¢mdti¢ s¢ien¢e of insirudionl: investig*tions inio students, ways vf knowing and underbldnding mathenidtics, ledrners, mdih¢n)dli¢dl n)isconcepiiony and ways of dddressing them in instruction,. and on mathematics teacher education. In order lo be rigorous, dll retsea￿h in mathem(iti¢s educaiion mus¢ be lounde¢J on fimi theoretical principles and meihods, and bdsic research devoted ro 'iheory' is a si&inificant part of every PME Conference. PME Membe￿ take what they gain from their participation in the Confeiences back to their re5PCCtive countries of work and study, where they are leading authoritie% in and cot)tributor% to natlOn￿lI and Tegional Initiatives in connection with 5¢hooling, ted¢hcr education and univcrsi¢y mathcrnatic8 teaching. In mo%t coiintri¢%, for example. it is thcse cxpcrts who dre giv¢n rcsponsibiliiy for the writing and rcvision of rnathemcitiC5 Curricula and approvcd textbook.￿. A crucial contribuiion of PME to this national activity by its mcmbcr8 is thc international character of Ihc PME community.. exposure to practices in other coulltrie% motivJt¢s us to quc%tton and critically cvaluate our own traditions and habitual pritC¢i¢eb, #nd thercby to su%tain what IN good to changc what could bc done differently and pcrhap5 bettcr. Many PME members also aci as co￿￿ult#￿t5 to variou% dgencic8 contracted to work with developing couniric$ in the reform of their mathen)aiics curricula. relatcd in8trucliondl materials. and mathematic8 teacher education. In this way. PME plays an esseniial rolc Ihc intcllcctual power-house behind the improvement of mathematics t¢a¢hing and learning acrogs Ihc world. Purposes and public benefjt {Part 2) (a} All thosc with an intcrest in mathcmatics cducation including academics, r¢s¢ar¢h¢￿, teaching profcssional8 and siudcnts, eat) benefit from th¢ organisation's purposc 13. OperatSng and publlc benefit {Part l) (a) PME Annual General Meeting {AGMI has decided thai all expenditure thai excecds 5 QOOE shoiild be approved by the AGM. Fxpenscs auihorized by an AGM decision or expenses thai fall under the 5 OOOE threshold are either dccidcd by the board of trustccs or by a subcommiltcc nominated by the board Of irustees. (b) PME'S main focu8 each year is to provide and pr¢par¢ an annual confercncc within an agreed country as mthtioned earli¢r in thi% 4cction. (cl PME has developcd critcria I policy set out by the trustees regarding the making of grants and this lays within our Skemp Fund grynt making policy. 14. Operating and public benefit (P8rt 21 (al The conference fe¢ in¢lud¢5 a membership f¢0 for that year. Hence, a participant of a conf¢ren¢e automatically become8 a member. To be eligible for regioniil LonferenL¢ or special projeci SLlPPOrt, the M￿7n appliL£int needs to be PME ￿eMber. (b) PME conference pruceedings are available online for dnyone freely to read. 15. Operating public benefit (Part 3) (al The charity chargeb d fee for aitendanc¢ at Its annual conf¢ren¢¢. Att¢nd¢es may apply for d grant from th¢ Richdrd Skemp Memorial Fund. This Fund was established to provide lindncial support for prospective PME participants fron] under-represented Lour)tiies, or countTie5 in which no financial support is available. in order to dllow thetn to altend the (b} We reolize that tr2velling (usually flying) to the annual conference increases conference participants, carbon emissions. Icl 'fhe board of trustees gets refunded their hotel slay for ihe exlrn nighib they have to because of the board meetings before and after the annual conference. They are also provided meals during the board meetings. The fflember5 of th¢ int¢iniltional piogidTn coniinitt¢r {IPCI ale refunded foi theii travel expense to the meeting al the confereTh¢e venue.'I'he president vJsit¥ the venu¢ twic¢ before th¢ ¢onf¢i¢nre and the oth¢r IPC memb¢tb Visit th¢ venu¢ once before the confereiice. PdbTe 6

International Group for thc Psychology of Math¢rnatie$ EdueAtlon Report of the Trustees for the Period 29 December 2020 to Jl December 2021 OBJECTIVES AND ACTIVITIES Socigl inve$tment$ 8nd clarification of the charity Classification of charity - Educati¢)nal (a} our chdrity sponsors or undertakes Tebearch. Makes graiiLs to individual5. (b} Wc providc an annual confcrcnce, rcgional confcrcnccs, other scientific actiwitics, lecturcs, discussion forum, prcsenlations. newsletters. We help, th¢ mathematics educatoTh (i.e. teachejs teaching mathematics, teacher educators) and mathcmatios ¢du¢ation rc￿arChers globally. We bring together rese8r¢h¢TS and oth¢rs int¢r¢st¢d in mdth¢matics edu¢ation, facilitates exchange of sci¢ntifJ¢ information. Collaborates witl) other organisations dnd projects with which we share a similar purpose and objective. Grant rnaking We PTovide grants to those who Sponsor or undertake research. These can be individuals and groups alike. STRUC'I'URE, COVkRNANCk AND MAIYAGEMENT Governing document Th¢ Charity is controlled by its goveming document, a decd of trust, and con5tihLtes a limitcd company, limited by guarantcc, as defined by the Companies Ac¢ 2(X)6. Charity constltution Datc of coi)stitution (originally registcrcd 29 December 2020 - Charity numbcr.. 1192932) Date amended.. July 2022 P¥g¢ 7

Int¢rnational Croup for the Psychology of Mathematic5 Education Report ofthe Trustees for th¢ Period 29 December 2020 to 31 Deetniber 2021 STRUCTURE, GOVERNANCE AND MANAGEMENT Recruitment appointtneNt of new trustees 9. MEMBERSHIP OF THE CIO 9.1 Adrniwsiun of new members Membership of the CIO is OPETI to anyone who is interested in furtherin8 Its putyoses, and who, by applying for meMber￿h1p. has illdicated his. her or its agreement to become a member and acceptdnce ofthe duty of menibers %et out in clause 9.3. A member may be an individual, a cojyorate body, OT individual or cory)oratc body rq)rcsenting an organisic tion which is not incoTporatcd. Ib) Admi%sion proccdure The charity trustc¢.$: li) may requirc 4Lpplieations for membership to bc made iii any rcasonablc way that they decide. lil) shall, if thcy approvc an Trpplication for membership, notify ihc applicant of their decibion within 21 days. liiil may rcfu%e an application for menibcr8hip if ihcy bclievc that it is in thc bcst intcrc.%t8 of thc CIO for Ihcm to do so. livl shall, if they decide to rcfusc an application for mcmbcr%hip, 8lVC thc applicmnt thcir rc￿￿1)5 for dvin¥ so. within 21 dayq of the decision bcing takcn, and givc the applicant thc opportunity 10 appcal against thc irfusdl. Iv) shall give fair con5idcration to any such appcal, and 8hall infonn thc applicani of their d¢ci8ion, but decision to confim rcfu%al of the application for member%hip bhall bc final. 9.2 Transfer of membershlp Membcrship of the CIO cannot be iran8ferr¢d 10 anyone ¢lse ex¢¢pt in the case of an iiidividual or corporate body reprcsenting an oiganisation whi¢h is not incorporaied. whose m¢mb¢rship May be tran5ferrcd by the unincotporated organisation to a new representative. Such iran5f¢r of memb¢rship does not take effect until the CIO has reccived written noiification of ihe transfer. 9.3 Duty of memb¢r5 It is ihe (iuty of ¢a¢h ￿eM￿r of the CIO to exercise his or her powers ds a member of the CIO in ihe way he or she decides in good faith would b¢ most likely to further the putposes of the CIO. 9.4 Termtnation of n)embershlp (d) MembcThhip of the CIO comes to an end if.. (i) the member dieb, or, in the case of an organiution lor the iepTeseiitative of orgallisationl Ihai organisaiion Ledses to exist., or (li) the member sen(Is a nolice ofresigndtion to the chdTily truslees., or (iii) any sllm of money owed by the member to the CIO 1% noi paid in lull within six months of ils falling due; or (iv) the Lharity trusi¢e¥ decide thdl It is in the best inter¢st5 of the CIO th4Lt Ihe member in question bhould be removed from membership, and pass a re501utioii to that effecl. (bl Before the chdrity trustees take any decisioll to ietllUVL gomeL)ne from membership of the CIO they must.. {]} inform (he member ofihe Teasotb& why it 1% propts%¢d ro remove him, hcr or it from mcmbership,. (jil give the n)ember at least 21 cleai (IdyS noliLe In whith lo makc representation￿ to thc charity tru5tec5 as to why he. she or it %hould not be renioved from membcr4hip' (iiil at a duly conbtilutcd meeting of thc cliarity Ini4t￿￿, considcr whcthcr or not thc n)en)ber should bc rcmovcd froni rnembership.. (iv) collsider at thilt meeting any repr¢￿ntatIOnS which thc mcmbcr makes a% to why the m¢mbcr should not be remov￿., and {v} allow the rncmber. or the nicniher's rcprcsent&tive. io make those representations in pcrbon at that mc¢ting, if the mcmbcr $0 choo%es. 9.5 Membership f¢cs Thc CIO rnay require members to pay reasonable membeibhip fees to the CIO. 9.0 Informal or as50¢iate Inon-voting) membership Page 8

Intern#tional Group for th¢ Psychology of Mathematlcs Education R¢port of the Trustee5 for the Period 29 December 2020 to 31 December 2021 STRUCTURE. GOVERNANCE AND MANAGEMENT (a) The Charity trustee% may create associate or other cla88¢s of non-votlng membership, and may deteminc the rights and obligations of any such Inernbers (intluding payment of mcmbeT8hip fces), and the conditions for admission to, and terminoltion of membership of any %uch cla55 of memkr8. (b) Other rcfcrences ill this constitution to "m¢mbers" and "mcinbcNhip do not apply to non-voting members, and i)on-votin8 Tnembers do noi qualify as members for amy purpose und¢r th¢ Charities Acts, Gcllcral Regulations or Dis%olution Rcgulations. Page 9

International Group for the Psychology of MAthematics Edueatio Report of the Trustees for the perl￿d 29 December 202Q to 31 December 2021 STRUCTURE. COVERNANCE AND MANAGEMEf4JT Decision makinki and Cvnerxl Meeting¥ uf Mefftbvr 10. MEMBERS, DECISIONS 10.1 General provisions Exc¢pt for those decisions thal niust be taken in a particular way indicated in ¢lduse 10.4, de¢isioDS of the members of the CIO may be taken eitl)er by vote at a generdl meeting as provided in cldUS¢ 10.2 or by writt¢n resolution ¥LS provided in clduse l 0.3. 10.2 1'aking ordin4ry decision5 by vote Subject to clause l 0.4. aiiy decision of the nienibetb of the CIO may be taken by Means of a resolution at a general meeting. Such a resolution may bc passcd by a simplc majority of votcs ¢asl ai the mecting includjng vote5 Gast virtually. 10.3 T&king ordinary decisions by written re501utioN without a general meeting (a) Subjcct to clause 10.4. a resolution in writing <1grccd by a simple majority of all thc mcmbcrn who would have been entitled to vote upon it had it been propo%ed at a gcncral niccting shall be eff¢ctiv¢, providcd that.. (il a copy of the propos¢d rcsolution has been 8ent to all tl)e membcrs eligible to vote; and (ii) a 8implc majority of mcmbcr% has signified it% agreeinent to The resolution in d documcnt or documcnt8 which are T¢ccived at thc principal office within the period of 28 days bcginning with the eirculatiots date. Thc document signifying a mcmber's agreement mu8t bc authenticatcd by their signature (or in thc ¢ase of an organisaiion which is a member. by execuiion according to its u%ual procedurcl, by a ststcmcnt of their identity aceompanyins the document, or in such other mai)ner as the CIO ha5 spccifjed. (b) The resolution in writing may comprise several copies to which onc or morc Membe￿ has significd their agrecment. (cl EliLpibility io vote on the resoluiion is Iin)ited io m¢mbers who are membeT8 of thc CIO on thc datc when thc proposal is first ¢irculaied in accordance with clause l 0.3{a). Id) Nut less than IO% of the members of the CIO Tnay request thc charity tru8tee% to make a proposal for d¢cisiot) by the niembers. 1¢) The charity trustees must within 21 days of receiving such a reqLiest comply with it if.. {1) th¢ proposal ib not frivolous or vexaiious. dnd doeb noi involve the publicdtion of defamatory Thaterial; {ii) the proposdl is stated with sutTicient Llariiy io enable Lffect to be given to it if it ili a&Fre¢d by the members,. and {iiil eff¢ct Can Idwfully b¢ giv¢n to ihe propobal if it Ib bo dgreed. ID Claus¢ 10.3{a), clause 10.3(b) and ¢lduse 10.3lcl apply to a proposal m£id¢ at the request vf rnernbers. 10.4 Decisions that must bt takeR in a p¥rticulAr way {a) tkcisions to appoint trustees at anni￿1 ¥eneral tneelingrs must b¢ taken by posiiional voting {lo be set out in detail by the charity trustee51 but this does nol affect the power given t(} the tn¢mbers (Trr the ¢harity trusteeb in clause 13.1{dl io appoiNt a new trustee oil a temporary basis. (b) Any decision to remove a tru%tcc must bc takcn in accordance with claus¢ 15.2. (c} Any decision to amcnd this COnSiituiion must bc taken in accordance with clau%c 28 of this constitution (Amcndment of Ctsnstitution}. (d) Any decision to wind up or di5solv¢ thc C.10 must bc takcn in accordancc with clause 29 of this con4titutii)n (Voluntary winding up or d]￿s01￿tiOn). Any deei¥ion to dmalgamalc or tran8fcr the undcrtaking of thc CIO to one or more other Clos Tllubt be taken in accordance with th¢ provision5 of thc Charitics Act 2011. 11. GENF.RAL MF.F.TINGS OF MEMBERS I 1.] Types of g¢n¢ral meetlng Thcrc must bc dll annual general mccting IAGMI of the membcrs of the CIO which can bc hcld in pcr%on, a% a virtual meettng or as a hybrid mceting. The fir%t AGM must b¢ held within 18 months of thc rcgistration of thc CIO. and subsequent AGMS must be held at intervals of not niore thai) 15 monihg. The ACJM mugt receive the annual statcmcnt of accounts (duly audited or examined where applicable) and the trustees, annual report, and mLiSt clect trustees as required under clause 13. Other general meetings of ihe members of the CIO be h¢ld al any time in person, as d VIrtUdl nieeiing or as a hybrid nieeting. Pdge 10

Internatlonal Group for the Psychology of Mathematics Education Report of the Tru5tee5 for the Period 29 Deeember 2020 to 31 December 2021 STRUCTURL COVERNANCE AND MANAGEMENT SubJ￿t to the followipg provisions 4 pei&on attending a meeiinkj virtudlly sh411 have the same righ14 to reLeivtt notice, speak. vote dnd otlierwise participate in the meeling) LIS he or she woiild hav¢ if dtt¥nding th¢ meeting in person. All generdl Meetin￿lS must be held in aLLor<tsnce with the following prgvisions. 11.2 Calling general meetlngs (a} The ¢hdrity trusteets-. (i) musl ￿11 the aniiiial general meetlll8 of the members of thc C.10 In accoTdance with clau5¢ 1 1.1, and identify it as such in the notice of thc llieeting,. and {ii} may call any other geiieral meeting of the membcrs at any tim¢. {b) The charity trustecs mu8t. within 21 days, call a gcncral me¢ting of the mernbers of the CIO if.. {1} they receive a request io do so from at least I￿/0 of the rnembeTS of the CIO. and If. at the time ()f any 8uch reqllest, there has not been any gcncral mecting ofthc mcmbcJE of thc CIO for morc than 12 rnonths. then this bub-clause shall have ¢ff¢ct as if were substituted for IOQ/o. li1} the request states the gen¢rdl nature of the busines5 to be dcalt with dt the iM¢etin& and is Juihenticated by the m¢mberfs) making th¢ r¢ques1. (cl Any such request may include particular8 1)f a rc8oliition that rnay propcrly be proposed, and is int¢nd¢d to be proposed, at the meeting. {d) A resolution may only properly be proposed if it is lawful, and is not defarnatory. frivolou￿ or vcxatious. {e} Any gcncral mcctinb7 callcd by thc charity tru8tces at thc ￿quest of thc mernber5 of thc CIO must bc held within 28 days from thc datc on which it is called. {0 If tlie chdTity trustce% fail to COTnply with thi% obligatitsn to call a gcneral meeting at the request of ils members, then the Iiiembers who requc%tcd the illeeting may thcmsclvcs ￿17 a general mccting. (gl A general nieeting called in this way must be held not more th4n 3 months after ihe dale when the members first Tcqllested the rtieeting. (h) The CIO must rcimbur5¢ any r¢abonabl¢ expenses incurred by the members calling a g¢nerdl meeting by reason of the failure of the chdTily truste¢s to duly call the meeting, but the CIO shull be entitled to be indernnified by the charity trustees who were Tesponsible for such failur¢. 11.3 Notlce of general meetin85 (a) Th¢ charity trLlStees, or, as thc casc niay be, the relevant rncmbcrs of the C.](), mu%t give at Icast 14 elear days notice of any gencrdl meeting to ill of the mcmbers, and to ally charity trustec of the CIO who is not a member. (b) If it is agreed by not Ic%s than 90'/Th of all mcmbcr8 of the C.TO. any rcsolulion n)ay bc prop05cd and pasbcd at the mccting even though The requirements of the above sub-elause havc not bccn mct. l-his sub-clausc does not apply where a %pccificd period of notice is strictly requircd by an()thcr clau%¢ in this con%titution, by the Charities Act 2011 or by the General Reguldtions. Ic) The nolice of any g¢nerdl meeling must.. li) btaie the tiine and dale of th¢ nie¢ting; lil) ¥(Jte the formal of the meeting (in peTr%on, virtual or hybrid) lili} give the address andlor the link tt) the virtual platfomi or %igning in codes al whieh the Tneeting is to take pluee., liv} give particularg of resulutioii which is to be moved at the meeting, and of Ihe ¥¢n¢Tal n&ttur¢ vf vther busin¥ss io be dealt with al the meeting- Iv) if a prtsposal ¢0 alter the CVT]Stitution of the CIO is to b¢ considered at the meeting, includE ihe text of the prvposed alteration; and Page I I

Intcrn8t101191 Croup for the Psychology of Mathematics Educution Report of the Trustees for the Period 29 December 2020 to 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGEMEIYT (vil iiiclude, with the noli¢¢ for the AGM, the annLial statement of a¢¢ounts and trustees. annual report, or where allowed under LldUS¢ 22 (Use of electronic Lommuni¢alion}. details of where the inforniation may be found on the CIO'S websit¢. {dl Proofthal aT) envelope containing a noti¢¢ wa% properly addres%ed, Prepaid and po8tcd; or that an electronic fomi Of notice was propcrly addressed and 4ent, ghall be con¢lusiv¢ ¢vid¢ncc that the notice was givcn. Noticc shall bc deemcd to be given 48 houis after it wa8 po8ied or %¢ni. {e) I'hc Proceedings of a mecting shall not bc invalidatc(I b￿a￿8¢ a mcnibcr who wa% ¢ntitlcd to reccivc notice of thc rneeting did noi receive it becausc of accidcntal E)nii%sion by the C.10. 11.4 Chairing of generAI meetlngs Thc pcrson clected d5 pre%ident by the mcMbCr￿ undcr cl4LU5C 13.2 {Elcctcd president of the Lhaiity tTUbteesl, shall, if present at the gencral meciing and willing to act, pr¢sidc a5 chair of thc mccting. Suhjcct to that, the membeTr of the CIO who arc present at a general meeting shall elect a chdir to preside at the meeting. 11.5 Quorum 8t gener81 meetings {a) No busine%5 may be transacted at any ¥¢ii¢rul me¢tin¥ of the members of th¢ CIO unless a quorum is present when the meeting starts. Ib) Subject to the followinu provisions, the qUOTum for gjeneral meeiings shall be the greater of 4 /0 or three members pr¢s¢nt and ¢ntitled to votL upon the business of ihe mceiing. A person shall be deemed to be present by dttending either in perbon or virtually where aiidng7enients for virtu￿1[ aiiendance have been made. An orbjanisation represenied by person present dt the Ineeting in a¢cord¢ince wilh Llaus¢ 11.8, is count¢d d5 b¢ing present. Ic) If the meeting hus been called by or di the requ¢s1 of lh¢ m¢mb¢rs and d quonlm is nol present within 15 minutes of the Starting time specified in the notice of Ihe n)eeiing, Ihe me¢ling is closed. Id) If the m¢¢tiiig hJs been called in any otheT way and d quorum is noi present within 15 minutes of Ihe slariing tim¢ specified in the noti¢¢ vf th¢ meeliRg, the chair mus¢ or on a question of adjournm¢nt niust be taken immedidiely. A poll on any other maller shall be taken, aiid the result of the poll shall b¢ announced. in such n)dl)ner as th¢ chdir of the meeting shdll decide, provided thdt the poll musi be taken, dnd Lhe result of the poll announced, within 30 day% of the demand fur the poll. Pduve 12

Intern9tional Group for the Psychology of Mithtmatici Edueation Report of the Trustees for the Period 29 December 2020 to 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGEMENT {d) A poll may be taken.. {i) at the meeting at which it was denianded: or {ii} at %om¢ other time and place specified by the chair; or {iii) through the use of electronic conimunicatlOD5. le) In thc cvent of an equality o*votc4, whether on ¥ show of hands or corresponding virtual procedurcs or on a poll. the chair of thc mccting %hdll have a second. or casting vote. lfj Any objcction to thc qiialific4Ltion of any voter must ￿ raiscd al the meeting ai which the vote is Cd%t and the decision of the chair of the niccting shall bc final. 11.7 Electronic VotI￿g (a) Thc cliarity tru%tcc% may determine tl)at the meTnbers shall votc tsnline to elect charity tNst¢¢s or to make a d¢cision on any mattcr that is bcins decided dl a geneTrl meeting of tlie membctb. (bl Where onlinc voting is (J¢cidingT a matter. the trustee5 Inust send io members of the CIO. not less than 14 day5 before the deddline for reeeipl of vote& d notice by emdil, if tlie men)b¢r hab agreed to receive notices in this Wdy uniler clause 22 (Use of elwtronic communications), including dn Lxpldlldtion of ili¢ purpose of ihe vore and the m¢dllb by which the iiienib¢r may vote onlin¢ namely tho detail% and proe¢dure to be followed by the member. The online voting platforin should conlaiii details of the resolution being pul Io d Vote, or OF the Cdndidates for election, as applicable. {¢} Online voting must be conducted on an online platfomi based on the following principles.. (i) The votei's. infomiation and the votes are kept separated {anonynious vote). (li) Only memixrs get aLu¢sb to vote. {iii) Every member can vole only once. (iv) VoLes Can be independently verified if needed. (d) I'hc voling pro¢eduTe iiiubt specify the c105ing date and lime for receipl of vote&, and must state thal Jny votes rcccived afier the ¢105ing date or not con)plyin8 Wlth the voling procedure will be invalid and not be counted. {c) Aiiy dispute about the conduct of all online vote niust be refetTed initially to a pan¢1 set up by the charity trust¢cs. to consi%t i)f two trustees and two person5 independent of the CIO. If the dispute cannot be satisfaetorily resolved by the panel, it must b¢ r¢ferred to the P.lectornl Refom Services 11.8 Represflltation of orgaNi5at10115 and corporate mernbers An organi%ation or a corporate body that Ts a member of the CIO rnay, in accordance with its usual decision-making process, authorise a person to act ds Its representdtiv¢ at any gcneral me¢ting of the CIO. -I'hc reprcscntatlvc l8 cntitlcd to ¢xerri5¢ thr same powers on behalf of tlie organis2tion or corporate body as the organi%ation or corporate body could exer¢i%e as an individual niembeT of the CIO. 11.9 Adjournment of Theetings The chaii m4Ly Wlth the ¢onbeDt of a meeting at which a quorum is prebeni land Shall if 80 dircetcd by the meeting) 41djourn the meetinb tg another time aiidlor place. No business n)ay be iransacted at an adjourned meeting cxccpt busin¢sb which could properfy have be¢n transactsd at the original meeting. 12. CHARITY TRUSTEES 12.1 FunLIion5 dutie$ of ch8rity trustees The charity trustees shall manage the affairs of the CIO and may for thal PUTPOS¢ exercise all the powers of the CIO. It is the duty of ed¢h chdrily truslee: P¢Lbie 13

Inl¢rnatlon&l Group for the Psychology of Mathematles Education Report of the Trustees for the Period 29 December 2020 to 31 Dwember 2021 STRUCTURE, GOVERNANCE AND MANACEMENT (a} to ¢xercise his or her powers and to perforni his or h¢r functions a5 a tNstee of the CIO in the way he or she de¢iiles in good faith would be most likely to further the purpo￿5 of th¢ CIO,. and (b) to exercise, in the perforniance of those functions, 5u¢h ¢ar¢ and skill as is T¢awnable in thc circumstanees having regard In parti¢ular to: (i) any special knowledgc or ¢xperience that hc or She has or hold% him%elf or herself out as having; and (li} if he or shc acts as a Charity trustee of thc CIO in the cour8e of a business or prof¢ssion, to any special knowlcdge or experience that it is r¢awnable to expcct of a pcrson Acting in the course of that kind of buSinC￿$ or profession. Pagve 14

International Group for the Psychology of Mathcm4t5cs Education Rcport Dftht Trustces for the Perlod 29 December 2020 to 31 Dc¢emb¢r 2021 STRUCTURE. GOVF.RNANCE AND MANAGEMENT Induction and training of new tru5tee$ 12. CHARITY TRUSTEES 12.1 Functions and duti¢s of ¢hJTlty tTUStees The Lharily trustecs 5hdll manage the affairs of the CIO and n)dy for ihal purpose exereise all the power5 of the CIO. It is the duty of each charity trustee.. Id) to eK¢rcis¢ his or her powers and to perfom) his or her fuii¢tions as a trust0¢ of th¢ CIO in ihe way he or she decides in good faith would be mo%t likely to lurther the purposes of ihe LIO; ai)d Ib) to exercise. in the perfotmanc¢ of thub¢ fun¢iion&, suth Cdre and skill as i& reasonable in the circumstance5 haviD8 regard in parti¢uliir to". (il any bpecial knowledge or experi¢nee that he or she has or hold% himself or herself out as having., and (ill ilhe or bhe actN a5 d charity Iru%lee of the CIO in the course of a business or profession, to any special knowl¢dg¢ or experience that it IS Teabonable to expect of a person acting in the course of that kind ol. business or profession. 12.2 Eligibility for trusteeship {a) No one niay be appoiiit¢d a charity trustee.. {1) i(he or she is iin<ler the agc of 16 yc3rs,' or {ii) if he or she would automatically ccasc to hold office under tlic provision5 Outlined in clause 15.1{f). (bl No one i% enliiled lo act as a charity tNstcc whcther on appointmcnt or On any re appointment until hc or she h&5 cxpre*sly acknowledged, in whatcvcr way the charity tru￿tCeS decidc. his tsr her acceptance of thc 0￿1¢¢ of charity trustee. (cl Ai least on¢ of the tru%tces of th¢ CIO must b¢ 18 years of a8e or ovcr. If there is trustee aged at lcabt 18 years, the rernaining trustce or tNstCC5 may act only to Call a meeting of the chariiy trustcc8, or appoint a ncw charity trustc¢. 12.3 Number of ehxrity trusttes (a} There must be at least 5 charity trustccs. If thc number fall￿ below this minimum, th¢ remaining trustee OT tTUStees may att tsrtly to call a meeting of thc chartty tnjstccs, or appoint a ncw charity trLiStcc. {b) Therc must bc at least one truEtee that is a UK rc%ident. If the nurnb¢r falls below thi$ minimum, the remaining trustcc or tru%tees may act only to appoint a new charity trustee who 1% a UK r¢8id¢nt. {c) Nts more thlln thrcc charity irusiees frrjm the same coiintry shall be charity trustccs at any onc tirne. {d) Therc is no maximum number of chariiy trnstces that may be appoint¢d to the CIO. 12.4 First ehArity tru$tet% The first charity trust¢¢s of th¢ CIO are.. Markku Hannula Yasmine Abtahi IYa8aman Abtahi) Judy Andcrson Richard Barwell Arindam Bosc Trdcy Helliwell Yiming Cao Ccllcida Fernandc7. (Cencida Fernande7. Verdu) Ching Esther Chan Anika Dreh¢r Anthony E5sieii Eindt Heyd-metzuyanim Jodie Hunier Maitree Inpiasitha Maria Mellone MigFuel Ribeiro (Carlos Miguel da Silva Ribeiro) Lovisa Sumpter 'rhe first pre55dené of the charity trustees 15 (see 13.2(a) below): Mai'kku Haiinula 13. APPOINTMENT OF CHARITY TRVSTEES Page 15

InternAtional Group for the Psychology of Mathemgtics Education Repibrt tsf tlbe Trustees for the Period 29 DecLmbtr 2020 to 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGEMENT 13.1 Retirement by Rotstion {a} At evcry annual gcncral Tneeting of the memb¢rs of the CIO, one-fourth of the elected chlirity trustees sliall retirc from office. If th¢ nuinb¢r of ¢l¢c¢ed Lharity trub(¢¢s ib not four or d multiple of four, th¢n thv numb¢i ll¢£if¢st io one-fourth shall r¢tir¢ fr(Trm otTi¢e. but if theT¢ is only one chaTlty truste¢, h¢ or she sh411 retire. (b) The charity trustees to retir¢ by rotation %hall be thosL whg hav¢ been longT¢St in otTic¢ sili¢¢ th¢ir IdSt appointment or reappointm¢Dt. If any trusl¢es wer¢ Id%1 appointed or redPPOillted Oll th¢ sam¢ day iho4e tu retire shdll {unless Ih¢y otherwise agT¢e gmoiig themselves) be detemiined by lot. (c) The VdC<inLies arising niay be fjlled by the decision of the members at the dTrnual general meeting in accordanee with clau5¢ 10.4lal: any vacatLLies not filled at the annual general tnetting Tn<ly be fllled provided in cl£lU5e 13.1 Id). (d} Thc membcrs or the charity tru%tecs n)ay at any time dccide to appoinl a new charity irustee wheiher in place of a charity trustec who ha8 rctircd or bcen rclliovcd in dccordancc with clause 15 (Rctircment and rcmoval of Charity tru%tccsl or dn additional charity ttu%tcc. (c) A pcr50n so appointed by thc charity trustCC5 shall Tetire at the conclusion of thc annudl general mccting ncxt following thc dale of his appoinimcnt. Jnd shdll not bc countcd for thc purposc of detemining which of thc cliarity trU￿ceS is to retire by Totation at that mecting. 13.2 Prtsident Ele¢t and President of the ehArity trustees Therc shall onc Presidcni of the charity injstees. fir4t appointed in clau* 12.4 above and th¢reafter elected in aetordanec with thc proviqion8 following.. (a) At every third annual generdl mecting {beginning in 2021) of the members of the CIO, the position of Prcsidcni-Elect may bc fillcd by thc deci%ion of the mcmber% taken in accordancc wilh clausc l 0.2. (b) Thc prcsi(Jent-eleet will bceomc thc prcsidcnt and a charity trn8tee at the c4)nclll8ian of thc n¢xt annual gcncral meeting. (c) A ￿lldidale for President-Elect must.. (i) be a member of the CIO at the lime of election. (li) have served as a charity trustee or a Fomier IGPME International Committcc member la8 spccified in the Bye Lawsl previously. (iii) not currently be, or have been, Ihe President., this includes also past Presidents of the Fomier IGPME las specifi¢d in the Bye Lawsl; (iv) not be in violation of clau5¢ 12.3(c) (d) The Pr¢sid¢nt-Ele¢t shall r¢main a memb¢r of the CIO and every third annual general n)eeting (beginning in 20221 of th¢ memb¢rs uf th¢ CIO, th¢ Presid¢nt of th¢ ¢hdrity trust¢es Shall retire and ihe Presideni-Eleci shdll assutne the role of President ol'the charity trustees and hence become a trust¢¢. If, at ihis lime, the position gfpr¢sid¢nt-Elect is vacant. then the positiot) of President will be filled by the decision of the m¢mbers taken in dccordJn¢e with claus¢ 10.2 13.3 Th¢ role5 and duties uf the President aThd Pre5ident-Elect and such other charity tru5t¢e officers as the charity trusttts shall deem appropriate sh411 b¢ 5¢t out d¢tail in BY￿LaWS to be agrccd by the rnember5 from tijne to tirne. 14. INFORMATION FOR NEW CHARITY TRUSI'EES The charity tru%tecs will makc available to each new chdllty truqtcc, on or before his or her first appointTnent'. {a) a copy of tliis constitiition and any amcndmcnts mdde to it,. and {b) a copy of thc Clo's latc%t tru%tc£s' annual rcport and sldtcmcnt of accollnts. 15. RETIREMENT AND REMOVAL OF CHARITY TRUSTEES 15.1 A charlty trustee ¢eas£5 to hold office if he or she: (a} Rciires by notifying the CIO in writing (but only if enough charity trusiccs will remain in office when the notice of rc8ignation takes effect to fomi a qUOTum for mcctit)gs1. (b} [% absent withoul the permis%ion of the charity trustee% from all their meetings held within a period of twelve rnonth and the in]stccs re%olvc that hiq Dr hcr offiee bc vacatcd. (cl Dies. {d} In the Writ￿ opinion. givcn to the eompany, of a re¥istcrcd medical practitioner treating that pcr50n. has become phy%ically or m¢ntally incapable ofacting a% a di￿£10r and may remain $0 for mole thai) three Tnonths. (e) Is removed by the m¢mb¢r5 of the CIO in accordance with cl&us¢ 15.2. Pagve 16

In¢¢rnatlonal Group for the Psyehology of Malhernatics Education Report of the Trustee5 for the Periud 29 December 2020 to 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGEMENT (t) Is di4￿1]ried from dctink) as (i cliarily ¢rusiee by virtuc of section 178-180 of the Charities Act 2011 (or any statutory re-enactmeni or modification of that provision). 15.2 A charity trustee shall be removed from office if a resolution to remove that trustee is proposed at a general meeting of the rnember5 called for that purpose and propei'ly convened in accordance with clause I I, and the re501ution 15 passed by a two-third5 majority ofvotes cast af the rneeting. 15.3 A resolution to remove a charity trustee accordance with clause 15.2 shall not take effect unle35 the illdividual concerned has been given at Itast 14 elear days, notice in writing that the resolution is to b¢ proposed, specifying the circumstance5 alleged tQ justify removal I'rom office, and ha5 been give￿ a reasonable opportunlty of making oral Andlor )vritten r¢prcscntations to thc memhcrs of the CIO. 16. RkAPPOIN"I'MTr.NI" OF CHARITY TRUSTEES Any pcr%on who rctlTes a charity trustcc by rotation or by giving noticc to the CIO 15 cligiblc for rcappointmcnt. A char(ty trust¢¢ who has qervcd for two con8cciitivt tcmi8 may n(Trt be rcappointcd for a third Consecutive tcrm but may bc reappointed after an intcrval of at Icast five ycar%. 17. TAKING OF DECISIONS BY CHARITY TRUSTEES Any decision may be laken either-. (al Al a meeting of the charily ITUStees,' or Ibl By Tesolution in WTltin&y or ¢leclronic form agr¢¢d by a majority of all of the charity trustees, which may ¢ompris¢ ¢ith¢r d Single d￿Ument or seveTal documents containiiig the text of the resululion in like forn) to which the majority of all of tlie chaTlty trustee% hds sibynified their dgre¢m¢nt. Such a r¢wlution shall be effectiv¢ provided that.. (i) il copy of ihe pioposed rebolution has been sent, at ui as near as Teas(Trnably practlcdble to the same tiine, to all of the chiirity tru8t¢¢s,' and (ii) tlie mdjority of all of the Lhdrity trustees has signified dgreemeni to the resolkntion in 4 document or documents which hds gr have b¢¢n auili¢nti¢at¢d by their signdture, by a %latemeni of their ideniily accompanying th¢ document or docuiiieiits, or in such oiher indnner the cliarity trustees have previously resolved, and d¢liv¢reJ to the CIO at its priiicipal office or %ucli otheT pldce Ihe Irustees niay resolve within 14 days oltl)e circuldtion dale. 18. DLLEGATION BV CHARITY TRUSTEES 18.1 '1'he charity tru$te¢$ may delegate any of their poJYer5 or functior15 to a cornrnittee or committee5, aThd, ir they do, they must determine the terms and conditions on which the delegatlon Is made. The ¢h*rity tru$tees may at #ny time alter those terms and condition5, or revoke the delegation. 18.2 This power 14 in addition to the power of delegation in the General Regulations and any other power of delegation available to the charity tru5tee4 hut is sllbject to the following re4virement5= (a) a committ￿ rnay Consist of two or morc pcrwns, but at Icast one membcr of cach committec must be a charity trust¢c' (b) thc acL% ind procecdings of any ¢ommitt¢e must bc brought to thc dttcntion of thc charity tru8tces as a whole a5 soon as 15 reasnnably praeticablc. and (c) the chdrity trllslce% shall from timc to timc rcyiew the arrangcmcnts which they havc made for thc delegation of their powers. 19. MEETINCS AND PROCEEDINGS OF CHARITY TRUSTEES 19.1 Calllng meetings (Él) Any charity twstee may call a meeiing of the chdtity trust¢CS. (bl Subject to ihal, the Lharity tTUStees shall decide how their meetlllg￿ dre to b¢ Called, and what notice is required. 19.2 Chairing of meetinky The President of the charity Iruslees elected accordiiig 10 Clause 13.2 IPr¢bident-El¢ct and Pre5ideTrt of the chJrity trustecsl shall chair thc nieetings (Ff th¢ charity Lrustees. Il. th¢ Presid¢nl ib not present within 10 minutes <ifter the time of the ￿¢¢11￿8, the charity trustees present may appoint one of Iheir number lo chair th£lt n)eeting. Page 17

Intcrnation41 Group for the Psychology of Mathematics EducAtiDn Report of the Trustees for ihe Peylod 29 December 20211 to 31 December 2021 STRUCTURE. COVERNANCE AND MANAGEMEIYT 19.3 Procedure at meetings (a) No decisiot) shall be taken ai a meeting unle4$ d qLiorum is present at the time whet) ihr decision is taken. -11)e quoNm is two charity ttustees, or the number nedresl lo one Ihird of the tutal numbei of chaiity ttustees. whichtver is gredter. or such larger nun)ber as ihe charity Iruste¢% may de¢id¢ froni tinie to tin)e. A charity Iiuste¢ &hall not be Lounted in the qu(>rum presenl wheii any decision 1% 4Lbout a inatler upon whicl) he ur She is nol entitled to vote. (b} Quesiions dfibill&i dt a IneetinLJ shdll be decided by a majuTily of thos¢ elisible to vote. {Ll In the case L)f an equality ofvotes. Ihc chdll" %hall have d second or casting vott. 19.4 Participation in tneetings by electronic mean5 {al la) A nieeting may be held LIS a hybrid meeling or by suitable clectronic mcans agreed by the charity trustees in which each partitipanl may communicate with dll thc othcr participants. (b) Any charity trustcc participaling at a meeting by suitablc clcctronic mcan% (igrccd by the charity trustees in which a participant or participai)ts may conimunicatc with dll tlic othcr participants shall qualify as being present ai the meeiing. {cl Mc¢tings held by electronic mcans must comply with rules for meeting$, including ¢hairing and the taking of minutes. 20. SAVING PROVISIONS 20.1 Subjeet to clau8e 21J.2, all decisions of the charity trustee5. or of a Committee of eharity tru5tee$ shall be v&lid notwithstanding the partielpatlon in any vote of # charity trustee: {al who was disqualified from holding office. (b) who had previously rctired or who had been obligcd by the con8titution to vacatc office. (cl who was not entitled to vot¢ on the matter. whcthcr by reason of a conflict of inter¢%t or gtherwise. If, without th¢ vote of that charity truste¢ dnd that Lharily trus1e¢ being counted iii the quorum. the dtuision ha5 been made by a majoriiy of the charity trustees at a quorate mecting. 20.2 Clause 20.1 does not permit x churity trustee to keep any benefit that may be eonferred upon him or her by ¥ resolution uf the charity trustees or of a commitlee of Charity trustees if, but for Clause 20.1, the resulutio would hY4ve been void, or if thc charity trustee has not eomplied with clause 7 (Conflict5 of •ntere5t). 21. EXECUTION OF DOCUMENTS 21.1 The CIO Shall execute documen¢$ either by signAlure or by aifixin¥ it% 5eg1 lif it has one). 21.2 A docum¢nt is v4lidly executed by si8naluTe if it is signed by ai least two of the charity trusl¢es. 21.3 If the CIO ha5 a seal.. (a) It must comply with the provisions of the General Rcgulations; Ibl It must only be used by the authority of thc charity trL15tecs or of a committee of eharity trustees duly auihorised by the eharity trustees. Thc charity trustces may dctcrminc who shall sign any document to which ihc scal is affixcd and unle55 Otherwise determined it shall bc signcd by two chai'ity trustees. 22. USE OF ELECTRONIC COMMUNICA1'10NS 22.1 General The C.10 will comply with thc rcquircmcnls of the Communications Provi%ions in thc General Regulations and i particular.. (a) the rcquircment 10 providc within 21 days to any meiiiber On request i hard copy of any document or infom)ation sent to thc mcmber oihcnvisc than in hard ci)py form. (bl any requircmcnts lo provide inforniation to thc ComTnissitsn in a particular fom or manner. 22.2 Use of eleetronle eommunieations (a) To the C.10 Any mcmbcr or charity trustee of the CIO may communicate electronically with the CIO to dn addr¢%s sp¢Lified by the CIO for ihe PUTpose, so long as the ¢ommunication is auth¢iiticated in a Jnanner which is ￿t1&faLlory to the CIO. (b) By the CIO Page 18

InterThationAI Croup for the Psy¢holoEY of Mithematles Edueatlon Report of the Tru5tee5 for the Period 29 December 2020 10 31 De¢emb¢r 2021 STRUCTURF., GOVERNANCE AND MAf4AGEMENT (i) Any m¢n)ber or cl)arily trustee of the CIO, by pr¢)vidinB Ihe CIO with his or her email addres5 or sirnilar, is taken to have abFreed to receive communicalionb froin the CIO in electroniL forni al thal addres& unless the member has illdica¢ed to the CIO his or her unwilling)ness to receive such communications iii that fom). {ii) The charity trustees niay, subject to complianc¢ with any legal reguiren)entb, by m¢an5 of publiciltion on its website.. {A} Provide the members with the notice referr¢d io ID clau%e 11.3 {Nolice of gencral mcctingsl. IB) Give ¢harity trustees notice oftheir In¢¢tlllbT5 in dccordance with clausc 19.1 (Calling mcctings). IC) Submit any proposal to the m¢mbers or charity trnstccs for deCi￿lOn by written resolution or online votc in accordance with tlie CIO'S powerb under clause 10 IMcn)bcrs' dccisions), clausc 10.3. (T)cci510llS tak¢n by resolution in writing), or clause 11.7 (Ele¢lroni¢ voting). (cl The charity trustees must.. (i) Take reasollable st¢P5 to entsure that mcmbeTS and charity tru￿tee$ arc promptly notified of the publication of any such notice or propoqal. (lil Send any such noti¢¢ or proposal in hard Copy fomi to any membcr or charity tnLsiee who has not Conscntod to rc¢eiv¢ ¢ornmunicatians in clcctronic fom1. 23. KF.F.PINe OF REC.ISTERS Thc CIO must caTriply with its. obligiitioiis under th¢ General Regulations in reldtion to the keeping of, and PTOViSiQll of access to. register5 of its members and charity tTUbtees. 24. MINUTES The charity tnistees must keep minutes of all.. (a) appoinlnients of o￿lCerS Tnade by the Charily Irusiees. (b} proceedin&Trs at gienerdl me¢tings ofthe CIO. {c} meetingis of tlie charity trustees and commill¢es of Charily trust¢es including.. (il the lldines of thc trustecs pr¢s¢nt JI the m¢¢ting without di4tinction between those who attended in person and th05¢ who aiiended virtually,. (ill the de¢isions made al the meetings; and {iiil wh¢Te appropriate ihe redsons for the decisions. (d) Ilecisi0115 M￿lde by thc charity trustees otl)eTwise thali in ineetinkjs. 25. ACCOUNTING RECORDS ACCOUNTS, ANNUAL REPORTS AND RETURNS, REGISTER MAINTENANCE 25.1 '1'h¢ Charity trustee5 must ¢omply with the requirement% of the Charities Act 2011 with regard to thc kccping of accoLintiiig records, to the prcparation and scrutiny of statements of Accounts, and to the Preparation of annual rcports and rctums. Thc slatcment% of accounts, rcport% and rctllrn% niust bt sent to the Charity Commission, rtgardless of the incomc of the CIO, within 10 months of tlie financial ycar end. 25.2 1-hc chaTity tiu%tees must comply witli their obligation to inforni thc Commis%ion within 28 days of any change in the particulars of the CIO entcrcd on thc C.cntral Regi%tcr tsf C.haTltie8. 26. RUI.r.s Thc charity tru%tees muy from time to tinie miike such r¢asonabl¢ proper rules OT byc laws as they may dcem ncCCs￿ary or cxpedicnt for the proper ci)nduct and manag¢ment of the C.10, but Such rulcs or byc laws rnu%t not bc inconsistent with diiy provisivn of tliis Lonstitution. Copi¢s of dny suLh Tules 01 bye Idws currently in force must be niade dvailable to any meTnbcr vf the CIO reque￿1. 27. DISPUTES If il disputc aris¢s between mcrnbeTS of the CIO about the validity or propriety of anything done by the member¥ under this constitu(ioii. and the di%pute cannot b¢ resolved by agrceinent, the parti¢s to the disput¢ must fiTSt try in good faith to 5eiile tli¢ disputc by mediation before res0rtiM8 to liligation. Page 19

Internatlonal Gyoup for the Psychology of Mathematics Edu¢ation Rtport of the Trusttes for the Period 29 December 2020 t• 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGEMENT Wider network & Amendment of Constitution 28. AMENDMENT OF CONSTITUTION As provlded by elausts 224-227 of the Charitie$ Act 2011: (a) Thi8 constitution Can only bc amcndcd.. (i) by re%oluiion agrced in writing by all mcmbers of thc C.10; or (li) by a resolution passcd by a 75U/o majority of voics ca%1 at a gcncral rnceting of the mcmbers of the CIO. (b) Any alteraiion of clausc 3 {Objccts}, clausc 29 (Voluntary winding up or di%soluiionl. this clausc, or nf any provision wherc the alterdtion would provid¢ authori8aiinn for any bcncfit to bc obtained by charity trustc¢s or mcmbcj of the CIO or perwns connected with them, requircq thc prior written con8ent Thf the c.harity Comrni8sion. (r) No am¢ndTn¢nt that is iAtonsist¢nt with the provisitsns of the Chiiiilies A¢t 2011 OT th¢ G¢n¢rdl R¢gulations shall be valid. Id) A copy of any resolution altering ihe eongtitution, togeiher with a copy of the Clo's con%titutinn ￿ am¢ndcd, must be sent to the Commission within 15 ddyS from the dat¢ on which the resolution 15 pa%sed. The Jm¢ndmeT)t does not rdke effect until li been recorded in the Reg)isler of Charities. 29. VOLUNTARY WINDING UP OR DISSOI.UTION 29.1 As provided by the Dissolution Regulations, thc CIO may be dissolved by resolution of its member5. Any detision by the members to wind up or dissolve the CIO ean only be made: {a} at a gcncral mceting of the mcmbers of thc C.10 called in accordancc with clausc I l (G¢ncral m¢¢tings of members), of which not les% thilll 14 days, noticc has bccn givcn to thosc cligible to attend and vote.. (i) by a r¢solution passed by a 750/11 majority of thoqe volii)g, or {ii} hy a re%alution pas%ed by decision tak¢n without a vote and without any expres8ion of dissent in response to thc que￿]0￿ put to thc gcneral mceting; or (b} by a rcsolution agreed in writing by all mcmbcrs of thc CIO. 29.2 Subject to the payment of all the CIO'S debts: (a) Any resolution for the winding up of the C.10, ar for the di8solution of the CIO wiihoui winding up, may contain a pri)vi8ian direeting how any remaining a￿set% of thc CIO shall be appli¢d. (b} If thc rcEolution docs not contain such a provision, thc charity trii%tc¢s miist decide how any Temaining assets of the CIO Shall be applied. (cl In either cds¢ ihe remaining be applied lor eharitable putposes the saTne as or similar to th05¢ of the cio. 29.3 The CIO must observe the requirements of the Dissolution Regulalions in applying to the Commission for the CIO to be removed from th¢ ReElSter ofcharities, and in p#rticular: lal the ¢hdrily trusie¢s n)ust send wilh their appli¢ati¢)ii lu the CommiSblOn'. (i) a copy of the resolution pass¢d by th¢ memberb olthe CIO. (ill a declaration by the charity trustees that any dEbts alld other liabilities of the CIO have been seltled or othenvise provided for in full., and (iii) a statement by the charity trustees setting out the way in which any properly of the CIO ha5 been or is to be applied prior lo it5 dissolution ill accordaiice with this constitution. (bl the charity trustees must ¢n5ure that a copy of tl)e application is Sent within seven days to cvery member and employee of th¢ CIO, and io any charily trustee of the CIO who was rtot privy to (he application. 29.4 If the CIO L5 to be )vourJd up or di5501ved in any other circumstance5, the provisions of the Dissolution Rtgulation5 must be followed. 30. INTERPRbl'AI'ION In this constitution.. "ConneLted persun" means.. la) a child. paitnt, bJran(Jchild, ￿Trandparent. brother or siStLI of the charity trustee: {b} the spous¢ or civil partner of the charily Iiusiee or of any person fiillingy Wlthin clause 301(il abo)ve', {L) d person carrying on busines5 in partnership wilh the ¢h&riiy irustee 01 with any person falling within clause 30la) or clause 30lbl above., Page 20

International Group for the Psychology of M4thematies bducation Report nf the Trust¢es for the Period 29 December 2020 to 31 December 2021 STRUCTURE, GOVERNANCE AND MANAGF.MENT {d} an institution which is controlled.. {1) by the charity trustee or any connected person falling withiii elausc 30(al, cl#usc 30(b) or clause 30(e) abovc. or {ii} by two or more persons falling within clause 30(dl{i}, whei) takcn together. {¢) a body corporate in which.. {1) the charity trustee or any connected person fdlling within clause 30lal to ¢lau8¢ 30(¢l hdb a substantliil int¢r¢si', or {ii} two or Tnore persons falling within clause 3(Kelli) who, when taken tog¢ther, have a subslaniial interest. SeLtion 118 of the Charitie% Acl 2011 apply for the purpo%es of int¢rpretinLTr the t¢mis Use¢J in this constitution. "General Regulations" meanb the Charitable Incorpoiuted Oig<inisations IGen¢rdll RegJulatiOTbS 2012. 'Dissolution Regulations" mean5 ihe Chaiitable Incotporated Organisdtioiis Ilnsolv¢ncy and Di5501ution) Regulations 2012. The 'Conimunication% Provisions" means ihe Communications Provisions in IPart 10, Chapter 41 of the General Regulations. 'Charity trnstee" means a eharity trustee ofthe C.10. A "poll" n)eans a counted votc or ballot, usually (but not necessarily) in writinb. "I'he Fornier IGPMF." mcans The Intcmation21 Grollp for the P%ychology ol. MathematLC5 Education (abbreviated to PML.) being a group of rc8earch¢rs first cstablishcd in 1976 at ihe Intcmaliondl Congress on Mathematics Education, whose Constitution a9 an unincorporated organisdtion was adopted by its Annual Gencral Mccting on the 17th August 1980, changcd by thc Annual Gcncral Meeiings on the 24th of July 1987, on 10th of August 1992, on thc 2nd of Au8USt 1994, on the l 8th of July 1997, on th¢ 14th of July 2005. and on thc 21 st of July 2012, and which is succccded by this cio., 'Hybrid meetlng" means a meeting of membcrs of the charity or a rneeting of th¢ charity trustec8 at which some participants are attending the meeting in p¢rson and others are attending virtually 'Virtu&l Theeti￿¥" mcans ¢1 mc¢ting of members of the charity or a mceiing of the ¢harity trustecs whcr¢ arrangcm¢Ms have bccn madc in advancc to allow participants to att¢nd tl)e mecting by mean5 of a confcrence telephonc, vidco link or similar mcans of clectroni¢ communication at which all participants can bc hcard and can hear cach other without the need for them to b¢ physically present at the same location. A person participating in tt mecting by %uch means shall bo de¢Tned to b¢ attending virtually. Page21

International Group for the P$ychology of Mathematie8 Edueation Report of the Trustees for the Perind 29 December 2020 to 31 December 21b21 STRUCTURE, GOVERNANCE AND MANAGEMENT Related parties 6. BENEFITS AND PAYMENTS TO CHARITV TRUSTEES AND CONNECTED PERSONS 6.1 General provlslons No Lharity trustee or cOnn￿t¢d p¢rson may.. {a) buy or re¢¢iv¢ dny goods or services froni the CIO on ienns preferential to those applicable lo members of the publi¢; {b) sell goods, serviL¢s, or any interest in land ¢0 th¢ LIO; {¢) b¢ ¢mployed by, 01 receive any remuneration from. the CIO,. {d) r¢c¢ive any oiher financial benefit from the CIO., unless ihe payment or bejiefil is permiiied by clause 6.2, or authoTib¢(I by the court or the prior wrjrten conseiit of the Charity Commission { the Cojnmission") hds been obtuined. In this clause, a 'financial bellefil" means a benefit. direct or indirect, which is ¢ither money or has a monetary Vdluc. 6.2 Scope and powers permitting trustee5' or coNnected persOn5' benefits {a) A ¢h4rity trustee or ¢oniieeted person n)ay receive a beiiefii from the CIO as a beneficiary provided that it is 4vailable generally to tlie beneficiaries of the CIO. {b) A charity trustee or connecled person may enter into a ¢ontract foT the supply of services, or of goods that are supplied in connection with the Provision of seTVlC¢S, to the CIO where that is pemiitted in accordance with. and 8ubject to the conditions in, ￿ctIon 185 to 188 of the Charities Aci 2011. {c} Subject to clau5¢ 6.3 a charity trustee or ronnecied person may provide the C.10 with Boods that arc not 8upplicd in connection with 5ervice5 provided to the CIO by the chaiity trustee or COllDected person. {d) A charity tIUSt¢e or ¢onnerted person tn4y receive rcnt for premise8 let by Ihc trust¢¢ or ¢onn¢ct¢d p¢rson to th¢ CIO. The amount of the rent and the other terms of the lea8e mu%t be reasnnable and prop¢r. The charity trnstee concerned must wiihdraw from any meeiing at which 8uch a proposal or th¢ r¢nt or oth¢r temi$ of th¢ l¢asc are und¢r discussion. {e) A charity trustee or cont)e¢ted person may take part in th¢ nornial trading and fundr4i8in8 activitic8 of the CIO on the 8arne tern)s as members ofthe public. 6.3 Payment for supply of goods only controls lThc CIO and itg charity tru8t¢¢s may only rely upon thc authority providcd by clause 6.2(c) if each of The following conditions i% %atisficd.. {a) Th¢ amount or maximum amount of thc paynieTrt for tlie goods 14 set out in a wriitcn agreemcnt b¢tween the C.10 and the charity tru8t¢c or eonrtcctcd pcrson %upplying thc gDod8 ("the supplicW'). (b) The arnount or maximum amtsunt of the paymeni for ihe goods ijocs not excccd what is rea8onable in the ¢iwurnstan¢¢s for the supply of thc goods in qUCSlioD. (c) -rhe other ¢harity tTusiees are satisfied thdi it is in the best interests of ihe CIO to contTaCt witl) the %upplier rath¢r than with %omeonc who is not a Charity tru8tec or conncctcd pcrson. In rcachin¥ that decisiun th¢ Lhdlity ttUSt¢¢b tnusi balanec the advdniage of contracting with a charity tru%tcc or conncctcd peTSOn against the disadvdnia&?es of doiiig) so. (d) The $upplier i8 absent from thc part of aiiy rneetinLI 4Lt whiLh there is discu&bion of the proposal to ent¢r into a contract or arrangcmcnt with him or her or it with regdrd 10 ihe supply of go(xls ILI th¢ CIO. (e) The ￿upplier docs not vote on any such matter and is not to be ¢ount¢d when calculdtingT whether a quorum of charity trustees Is presen¢ at the me¢iing. (f) Thc rea￿n foi their decision is recorded by the chdTlty trust¢¢s in tli¢ minute book. (g) A majority of the charity trUs￿eS then in office ar¢ not in recehpt of r¢muneration or payments duthorised by Llause 6.(B¢nefits) 6.4 In el#tsse.2 #nd Llaus¢.3: (a) "The CIO" includes any ¢ompany in which the CIO.. (il holds more than 500/0 ofihe shares; or (ill controls mor¢ ihrfin 50/0 of th¢ voting righis allachcd to thc sharcs; or (iii) has the rigyht to Jppoint on¢ or mgr¢ directOTS to Ihe board of the coinpany. (b)"Conneeted person" includes any person within th¢ d¢fiTrition set out in elause 30 (Interpretation) Page 22

Internatio￿41 Group for the Psychology of Mathem4ties Education Report of the Tru5tets for the Period 29 Deeembcr 2020 to 31 Dcccmbcr 2021 STRUCTURE, C.OVERNANCE AND MANAGEMENT 7. CONFLICTS OF INTF.RF,ST AND CONFLICTS OF LOYALTY 7.1 A charity tru5tec must.. (a) declare the nature and extent of any interest, dir¢ct QT indirect. which he or sht In d proposed tranS￿tion or arrang¢m¢nt with th¢ CIO or in any transaction or arran¥ement entered inio by the CIO which has not previously been d¢cldr¢d: and {b) absent himself or herself from any discussions of the ¢ha¥ily trusiees in which it is postsibl¢ that a conflict of interest will drise between his or her duty to act bolely in th¢ interes1% of the CIO dnd any persos]al inlerest Ihncluding but not limited ￿ any financial interest). 7.2 Any chArlty tru$tee obsenting himself or herself from any di5CL15SiOMS accorda￿Ce elause 7.1 must not vote or be counted a$ part of the quorum in any decision of the charity trustees on the matter. 8. LIABILITY OF MEMBERS'fo CONTRIBUTF TO TIIE ASSETS OF THE CIO IF IT IS WOUND UP If the CIO is wound up, the Th¢ml)ers of the CIO have no liability to ￿ntrIbute to its assets and no personal rcsport8ibility for settling its dcbt% and liabilitics. REFERENCE AND ADMINISTRATIVE DETAILS Reglstercd Company number CE024473 (F.ngland ahd Wales) Rcgistcred Charity numbcr 119932 Registered office Bristol Business Centre Mailbox 314 179 Whiteladies Road Clifton, Bristol Avon BS8 2AG Tru5te¢$ Prof Di A DTeheT- Professor (resigned 22.7.22) Prof A A E5sien- University ProfessoT (resigned 22.7.221 Dr J A AnderboTr- Retired (resigned 22.7.221 Dr C Fernaiidez Verdu- A550Ciate Professor Dr Y Abiahi - University Prof¢5501 Dr A Bo%e- A8qociale Professor Dr J M R Flunlcr- As%ociatc Profc&sor / Secretary Dr T J Helliwcll - Senior l.ccturer / Trca8urer Dr B H Choy- Assistant Profcssor (appointcd 22.7.21) Ms M H JOhan￿80n - Scnior Lccturcr lappointcd 22.7.211 Prof C. Andra - Associate Professor {appointed 22.7.21) Dr K Komatsu- Associate Professor Dr C. M Krause - A8si%tdi)t Profe￿￿or (appointed 22.7.21) MTS M Ayalon Scnior Univcrsity Lccturcr {appointed 22.7.21) Dr D C. Sommethtsff - UniveTsity Prof¢8%oT (appointed 22.7.21 } Dr W Van Dooren Profe%%or / Prcsidcnt from 22.7.22 {appointcd 7.10.21} A Prof Dr M Inprastiha- Univer%ity Administrator (rcsign¢(122.7.22) M S Hdniiul4- Profe550r I Pre&id¢nt till 22.7.22 (rcsigncd 22.7.22) Prof W T Seah {&ppointtd 22.7.22) A R Strvhmaier lappoiiJted 22.7.221 Dr N Hudkuwski Idppointed 22.7.22) Dr N A Roberts (appointed 22.7.221 Page 23

International Group for the Psyehology of Mathematics Edueatio Report of the Trustees for the Perlod 29 Deeember 20211 to 31 Deeember 2021 REFERENCE AND ADMINISTRATIVE DETAILS Company Secretary DrJ M R Hunter Independent ExAmlner Martin Arthur FMAAT, AFA, FIPA. FFTA, MIH. MCIE. Accountancy Co-operative 56 DoichestEr Road Lytchett Minster Poole DoT5Ct BH166JE Bankers Barclay8 Bank plc Thame Branch Leieester Leistershire LE87 2BB Approved by ordcr of the board of trnstces on 18, Octobcr 2022 and sign¢d on its behalf by.. Dr W Van Dooren- Trustee Pag¢ 24

Independent F.xamlner's Report to the Tru$tees of International Ciroup for thc Psychology of Mathernatics Educgtion Independent txaminer's report to ¢h¢ trMstee5 of International Group for the Psychology of Mathematles Education {'the Company,) I report lo the churity trusteeq on my ¢xarnination of the accounts of the Company for the period 29 D¢¢ember 2020 to 31 Deccmbcr 2021. Re5pon5ibilitie5 and basis of r¢por¢ As thc chdTity'S tru4tccs of the Company {and also its directors for the purpos¢b of ¢ompdny law) you are responsible for the preparation of the aLcounts in aceordance with the requirements of the Companies Act 20061'the 2006 Act'}. Having satisfied myseifthat the accounts of th¢ Company are not Tequired to be audited under Part 16 of the 2006 Act and ar¢ ¢ligible for independent examination. I report in respcLt of my exaniinatioll of your rhaiity'5 ar¢ount$ as carried oul under section 145 of the Charities Act 2011 ('the 2011 Acl'}. In CdTryillg out my exailliniltiun I hiive followed the Directiolis given by the Charity Cummission under section 145(51 (bl of the 2011 AGt. Independent examiner's stxtemeMt I have coinpleted Iny exiiftiination. l ¢onfim) that no matters have come to my attention in conTbection with the examination giving nie cause to believe: accounling records were not kept in respect of the C.onipany as rcquircd by scction 386 of thc 2006 Act; or the accounts do not accord with thosc rccords: or the aecounts do not comply with the accounting rcquirements of s¢ction 396 of the 2(M)6 Act other than any rcquirement that the accounts give a truc and fair vicw which is not a matter considcred as part of an independent cxamination- or thc accoiint.% have not been prepared in aecordancc with the mcthods and principles of the Statcment of Rccommcnded Prdctite for aceounting and rep(>rting by charitics (applicablc to charitics prcparing th¢ir account8 in accordance with the Fii)ancial Rcporting Standard applicable in the UK and Republic of Ireland IFRS 102)). have no conccms and have ￿me across no other matters in collfftectioll with thc cxamindtinn to which attention should be drdwn in thi% report in ordcr io enable a proper underqtanding of the accounts to be reached. Martin Arthur FMAAT, AFA, FIPA, FFTA, MIH, MCIE. Accountancy Co-op¢r8tive 56 Dorchester Road Lytchett Minster Pvole Dorbet BH166JE Date.. Page 25

International Croup for the Psychology of MatlJematie8 Education Statement of Flngjneial Activitie$ for the Perlod 29 December 2020 to 31 Detember 2021 Unrestricted funds Restricted funds Total funds Notes INCOME AND ENDOWMENTS FROM Donations and l¢gacie$ 4,649 4,649 Other tTrdin¥ activities 21 21 Tot41 21 EXPENDITURE ON Charitable activitie$ Conferen¢¢ Planning Costs NET INCOMEIIEXPENDITURE) 51,9SS (Sl,934) $3,399 (48,729) 3,205 TOTAL FUNDS CARRIED FORWARD 3.205 4X,72YI The noteb fom part ofthese financial statemellts Pa8¢ 26

InternatioT]81 Cjrnup for the Psyehology of MathtmAtles Educltlon Bxlanfe Sheet 31 December 2021 Unrestricted funds Restricted funds Total funds Notes CURRENT ASSETS Cash ai bank 50,082 12,658 68,741 CREDITORS Amounls falling due within one year 2,069 3,205 5,274 NET CURRENT ASSETS TOTAL ASSETS LESS CURRENT LIABILITIES 58.151 15,863 74,014 NET ASSETS 5&151 15,863 FUNDS Unr¢slri¢ted funds Restricted funds TOTAL FUNDS 74,014 The charitable company is entitled to exemption from audit under Section 477 of the Companies Act 20(16 for the period ended 31 December 2021. The iknanbers have not required the company to obtain an audit of it5 financial statements for the pcriod cnded 31 tkccmbcr 2021 in accordancc with Scction 476 of the Companies Act 2006. The trustccs aeknowledgc their rcspon5ibilities for {a) ensuring that the Charilablc company kc¢p5 aectsuntrng rccords that Comply with Sections 38fi and 387 of thc Companies Act 2006 and preparing financial stat¢ments which give a ¢we and fair view of the slate of affairs of the charitable company as at the end of cach financial y¢ar and of its surplus or d¢ficit foT each financial ycar in accordancc with th¢ rcquircrnents af Scction8.394 and 195 and which otherwise comply with the requiremcnts of the Companies Act 2006 Telating to financial statements, so far as applicablc to the charitsble company. (b) These financial statements hav¢ b¢¢n pr¢pared in accordan￿ with the provisions appli¢able ¢0 ¢haritable ¢omponies subject to the small compani¢8 Teginie. The finai)Lial slatementb were approved by the Board of Trustees authorised for is5u¢ on 18 OdobeT 2022 and were signed on it5 behalf by.. W Van Dooren - I'rustee The notes fomi part of these financial statements Page 27 4)

T J I lelliwell --frustee The notcs forni part of thesc financial siatenicnts Pa¥e27 b)

Internationthl Group for the Psychology of MAthem4ties Education Notes to ¢he Financial Statements fTrr thc Period 29 Dccember 2020 to 31 December 2021 ACCOUP4TING POLICIES Basis of preparing the fin4D¢ial statements The financial stat¢ments of th¢ chdTitdble compuny, which is a publiL benefit entity under FRS 102. have been pr¢pdred in accordance with the Charities SORP (FRS 102) 'AccuuntinbT and Rtporting by Charities.. Ststement of Recommended Practice applicable to charitl¢S Preparing th¢iT d¢counts ill accordance with the Financial Reporting Standard applicable in the UK and Republic of Ireland (FRS 102) letTectiwe l Jdnuary 2019),, Financial Reporting Standard 102 The Financial Reporting Standard m eorporation tax on its charitablc Rctivili¢s. Fund aCcounti￿g UnrestTietcd fuiid5 can be used in accordance with the charitable objcctives at the dis¢retion of th¢ tnLSte¢s. Rcstricted funds can only be used for particular restricted PUTPO%CS Within th¢ objects of the charity. R¢stri¢tions arise when 5pccificd by thc donor or whcn funds arc Taiscd for particular re$tricted purposes. Furthcr cxplanation of the naiure and purpose of each fund is included in the not¢s to th¢ financial stat¢m¢nts. OTHER TRADING ACTIVITIES Rayalties 21 TRUSTEES, REMUNERATION AND BENEFITS TherL were no irusiees. remun¢tation or other benefits for the period ended 31 D¢¢¢mber 2021. Trustees expenses There were no trustee&, expenses paid for the period ended 31 De¢ember 2021. Page 28 continued...

International Group for the Psychology of MathematlC5 r.ducation Notes to the Financial Statements- eontinued for the Period 29 Dcccmber 2020 to 31 December 2021 FUNDS: AMOUNTS FAI.LING DUE WITHIN ONE YEAR Dank loans and overdraftslsee not¢ 5) Accrua15 and deferred income 5,709 (10,9113) 5,274 FUNDS OVERDRAWN An analysis of th¢ maturity of funds overdrJwn iy ¥iven below.. Amount8 falling due within one yeaT on demand.. Bank overdTafts 5,709 MOVEMEP4T IF4 FUNDS Net mov¢m¢nt in funds At 31.12.21 Unrestricted funds Gcn¢ral fund Conferencc Fund (5,708) 63.859 1ty,70¥1 58,151 58,151 Restricted funds 8kemp Donations Fund Africa Continent 4,961 10,902 4,961 10.902 15,1163 TOTAL FUNDS 74,014 74,014 Net movement in funds. included in the above are as follows.. Incornin8 rc%our¢c Resources expended Movement in funds Unrestricted funds Gcncral fund Conference Fund 21 110085 (5.729) 46,226 (5,708) 63,859 110,106 {51.955) 58.151 Restricted funds Skemp Donations Fund Africa Continent 6.405 10,902 (1,444) 4,961 10,902 17J07 15.863 I'OTAL TrUNDS 127 413 53,399 74,014 Pdbye 29 eontinued...

Intcrnational Group for the Psychology of Mathematics Education r4otes to the FinAncial St8tements- continued lor the Period 29 December 21120 to 31 December 2021 RELATED PARTY DISCLOSURES There were no related patty transactions for the period ended 31 December 2021. Pag¢ 30

Intsrnational Group for the Psychology of Mathematics Education Detailed Statement of F5nancil Aetlwlties for the Period 29 December 2020 to 31 December 2021 INCOME AND ENDOWMENTS DonAtio￿8 and legael DonatiOE)s received inc Skemp 4.649 Other ¢rding activities Royalties 21 Charitable activitie¥ Conf¢Tenc¢ regislration fees Conferenc¢ Fund5 S4,(K13 6¥,741) 122,743 TotAI incoming resources 127,413 EXPENDITURE Charitable a¢t5vi¢ies Grants to institutions 1,444 Support cost5 Management Conference costs Advertj51ng & web51te update5 29,132 152 29,284 Information technology Online conference facilities 17,094 Covern8nee c05t5 Honorarium- Adminislrator Po8lage and stationery Legal fees 3,513 264 Total resources expended 53J99 Net income This pag¢ does not fomi part of the ststutory financial staternents Page31

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Independent Examiner's Report to the Trustees of International Group for the Psychology of Mathematics Education (IGPME)

Independent examiner's report to the trustees of IGPME

I report to the charity trustees on my examination of the accounts of the International Group for the Psychology of Mathematics Education (Charity) for the year ended 31 December 2021.

Responsibilities and basis of report

As the charity trustees of the Charity, you are responsible for the preparation of the accounts in accordance with the requirements of the Charities Act 2011 ('the Act').

I report in respect of my examination of the Charity's accounts carried out under section 145 of the Act and in carrying out my examination I have followed all applicable Directions given by the Charity Commission under section 145(5)(b) of the Act.

Independent examiner's statement

I have completed my examination. I confirm that no material matters have come to my attention in connection with the examination giving me cause to believe that in any material respect:

  1. accounting records were not kept in respect of the Charity as required by section 130 of the Act; or

  2. the accounts do not accord with those records; or

  3. the accounts do not comply with the applicable requirements concerning the form and content of accounts set out in the Charities (Accounts and Reports) Regulations 2008 other than any requirement that the accounts give a true and fair view which is not a matter considered as part of an independent examination.

I confirm that there are no other matters to which your attention should be drawn to enable a proper understanding of the accounts to be reached.

Martin Arthur FMAAT, FFA, FIPA, FFTA, MIH, ACIE. 19[th] August 2022

Martin Arthur is licensed and regulated by the Association of Accounting Technicians to provide services in accordance with Licence No. 2208 details of which are displayed at the registered address shown below.

Accountancy.coop Ltd t/a Accountancy Co-operative, a business limited by share and registered in England No: 04703132 Registered Office: 56 Dorchester Road, Lytchett Minster, Poole, Dorset BH16 6JE. Tel: 01202 621622 Email: office@accountancy.coop Fax: 01202 621488. Director: Martin Arthur FMAAT, FFA, FIPA, FFTA, MIH, ACIE. Vat Reg No: 754 9377 84