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Direct linkTorbeyns, Joke; Verschaffel, Lieven; Ghesquiere, Pol – Cognition and Instruction, 2006
The aim of the study was to analyze the development of children's adaptive expertise in computing sums and differences up to 100. We defined the adaptive nature of children's strategy choices on the basis of problem (addition, subtraction), achievement, and strategy performance (accuracy, speed). Sixty-nine 2nd graders of high, above-average, or…
Descriptors: Children, Computation, Arithmetic, Problem Solving
