1.
Ratio and Proportion: Research and Teaching in Mathematics Teachers' Education (Pre- and In-...
by David Ben-Chaim, Yaffa Kere...
ISBN: 9789460917820
List Price: $54.00
2.
Ratio and Proportion : Research and Teaching in Mathematics Teachers' Education (Pre- and in...
by Ben-Chaim, David, Keret, Ya...
ISBN: 9789460917837
List Price: $99.00