Many of the earliest books, particularly those dating back to the 1900s and before, are now extre...

The third edition of this book offers a unique approach to making mathematics education research ...

This book makes math education research on ratios & proportions readily accessible to pre-and in-...

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may conta...

The third edition of this book offers a unique approach to making mathematics education research ...

This book makes math education research on ratios & proportions readily accessible to pre-and in-...