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Analysis of two problem situations on proportionality. Analyse de deux situations-problemes autour de la proportionnalite. Analyse zweier Problemsituationen zur Proportionalitaet. (French)
Petit x. (1989-1990) (no.22) p. 5-22. [ISSN 0759-9188]
Classification: F83 D43
1
Point symmetry: Development of student techniques in the context of half rotation. Symetrie centrale: Evolution des procedures d’eleves dans un contexte demi-tour. Punktsymmetrie: Entwicklung von Schuelertechniken im Zusammenhang mit der Halbdrehung. (French)
Petit x. (1989) (no.21) p. 5-28. [ISSN 0759-9188]
Classification: G53 D43
2
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