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Peer reviewedOkamoto, Yukari – Cognition and Instruction, 1996
Tested three models of children's mathematics word-problem solving based on developmental differences in quantitative conceptual structures: (1) quantitative relations represented as ordered array of mental objects; (2) numbers represented on two tentatively coordinated mental number lines; and (3) numerical operations represented as objects on…
Descriptors: Age Differences, Children, Cluster Analysis, Cognitive Development
