Els van Herpen

2 books • 1 series

Jan 1, 2008
Cover of Fractions, Percentages, Decimals and Proportions

Fractions, Percentages, Decimals and Proportions (Dutch Design in Mathematics Education, #3)

Jan 1, 2008
Cover of Fractions, Percentages, Decimals and Proportions: A Learning- Teaching Trajectory for Grade 4, 5 and 6

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