In a pedagogical method increasing in popularity, students of all levels--from elementary to post graduate--are likely to be asked to engage in debate with peers. How they understand the purposes and values of argumentive discourse is likely to affect its effectiveness. The 3 studies presented here involve junior high school, senior high school,…

This document contains the fifth volume of the proceedings of the 30th 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 59 research reports by presenters with last names beginning between Sac and Zaz:…