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Right angle in a triangle. Discovery learning at the Pythagorean theorem. (Rechter Winkel im Dreieck. Entdeckendes Lernen beim Satz des Pythagoras.) (German)
Schulmag. 5-10 2012, No. 12, 23-28 (2012).
Classification: G43 D83 D43
1
Teamprobe: Gleichungen lösen. (Solving equations.) (German)
Schulmag. 5-10, No. 1, 21-23 (2008).
Classification: H33 D43 U63
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