Researchers, policy officials, and the wider public in Japan and abroad often hold different views about the quality of Japanese education. Whereas Western researchers are attracted by the academic performance of Japanese students in international assessment studies, Japanese university professors launched a public debate in 1999 about declining…

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:…