The Ninth and the Tenth Congress of the European Research in Mathematics Education (CERME 9 and CERME 10)

CERME is one of the largest world congresses bringing together scientists fromall continents and entirely devoted to Mathematics Education.The scientific activities of CERME conferences are always focused mainlyon common work within the so-called Thematic Working Groups(TWGs). The particular way of organising the conference gives the opportunityfor in-depth analyses of the presentations and papers and for working outcommon conclusions after many discussions.