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Choice of operations: from 10-year-olds to student teachers. Die Wahl der Operation: Von 10jaehrigen bis zu Lehrerstudenten. (English)
Tenth international conference on psychology of mathematics education - PME 10. Proceedings. 10. internationale Konferenz ueber Psychologie und Mathematikunterricht - PME 10. Proceedings. London Univ. (UK). Inst. of Education 1986. p. 25-30 of 498 p. Copy held by FIZ Karlsruhe. Conference: 10. Conference of the International Group for the Psychology of Mathematics Education (PME), London (UK), 20-25 Jul 1986 [ISBN 0-85473-253-5]; ISSN 0771-100X
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