The National Science Foundation (NSF), through its Division of Undergraduate Education, is undertaking a major effort to significantly improve the mathematics and science education of prospective elementary and secondary school teachers. NSF had two major goals in organizing this workshop. The first goal was for the Foundation to learn from active…

This book contains revised versions of the major papers presented at the Research Agenda Project Conference on Number Concepts in the Middle Grades. It is organized into three major sections, along with an introductory chapter and two brief summaries. Part I includes chapters that deal primarily with analyses of subject matter. The four chapters…

This book contains the proceedings of a seminar that investigated the impact of cognitive and social development on the teaching of science in secondary schools, and the possible ways in which the science curriculum could be a context in which adolescents' development could be positively influenced. Six plenary papers were presented: (1) "Research…