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| Arithmetic | 1 |
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| Barrouillet, Pierre | 1 |
| Poirier, Louise | 1 |
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Peer reviewedBarrouillet, Pierre; Poirier, Louise – Human Development, 1997
Outlines Piaget's late ideas on categories and morphisms and the impact of these ideas on the comprehension of the inclusion relationship and the solution of arithmetic problems. Reports a study in which fourth through sixth graders were given arithmetic problems involving two known quantities associated with changes rather than states. Identified…
Descriptors: Arithmetic, Classification, Cognitive Development, Developmental Stages
