Strategies for Finding Sums and Differences Tyrone, Scenetra, and Jason
Observations of children using thinking strategies to find sums and differences are reported in the literature (Brownell, 1928, 1935; Brownell & Chazal, 1935; Carpenter, 1980; Carpenter & Moser, 1982; Ginsburg, 1977; Hiebert, 1982; Hiebert, Carpenter, & Moser, 1982; Ilg & Ames, 1951: Rathmell, 1978; Smith, 1921; Steffe, Hirstein, & Spikes, 1976; Steffe, von Glasersfeld, Richards, & Cobb, 1983; Steinberg, 1985; Steiner, 1980). These reports indicate that children do use thinking strategies to solve addition and subtraction problems in novel, creative ways. Instead of using a well-established method, they relate the problem to a known sum or difference.
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