Fractions, Percentages, Decimals and Proportions —— A Learning-Teaching Trajectory for Grade 4, 5 and 6

----- 分数、百分比、小数和比例：4、5和6年级的学习教学轨迹

ISBN: 9789087905729 出版年：2008 页码：163 Frans van Galen Els Feijs Nisa Figueiredo Koeno Gravemeijer Els van Herpen Ronald Keijzer Brill

This book describes the field of fractions, percentages, decimals and proportions. It shows the relations between these topics, and how they can be taught in a way that emphasizes these relations.