1.
Grundlegende Ideen und Mathematikunterricht
by Vohns, Andreas
ISBN: 9783833490637
List Price: $19.90
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3.
Theories in and of Mathematics Education: Theory Strands in German Speaking Countries (ICME-...
by Angelika Bikner-Ahsbahs, An...
ISBN: 9783319425887
List Price: $19.99