Portuguese schools in urban areas became multicultural during the 90s. Some students are quite distanced from the school culture. Many repeat grades. The curriculum emerges as a means of (re)organizing school practice, so that it is designed to foster inclusion. It is a tool for social mediation between the culture and knowledge of teenagers, and…

This document contains the second volume of the proceedings of the 30th Annual Conference of the International Group for the Psychology of Mathematics Education. Conference presentations are centered around the theme "Mathematics at the Centre." This volume features 60 research reports by presenters with last names beginning between Abr…