ICMI Study-21

ICMI Study-21  consisted of two parts: the Study Conference and the Study Volume. The Study Conference was be held in São Paolo, Brazil, from 16 to 20 September, 2011. The number of participants was limited to at most 120. The conference  attracted not only established researchers but also some “newcomers" to the field and mathematics teachers with interesting and refreshing ideas or promising work in progress, as well as participants from countries usually under-represented in mathematics education research meetings.