Search results for author:"Sheri-Lynn Skwarchuk"
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Rebecca P. D. Watchorn; Jeffrey Bisanz; Lisa Fast; Jo-Anne LeFevre; Sheri-Lynn Skwarchuk; Brenda L. Smith-Chant
Journal of Cognition and Development Vol. 15, No. 1 (2014) pp. 161–180
The principle of "inversion," that a + b - b "must" equal a, is a fundamental property of arithmetic, but many children fail to apply it in symbolic contexts through 10 years of age. We explore three hypotheses relating to the...