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Keyword:  Addition; Elementary Education; Mathematics Instruction; Number Concepts; Numbers; Problem Solving; Subtraction
Bruno, A., & Martinon, A. (1999). The teaching of numerical extensions: The case of negative numbers. International Journal of Mathematical Education in Science and Technology, 30(6), pp. 789–809. Dernièrement modifiée par: Sterenn Audo  v    Pop. 31.48%
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