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Direct linkLemaire, Patrick; Lecacheur, Mireille – Cognitive Development, 2011
Third, fifth, and seventh graders selected the best strategy (rounding up or rounding down) for estimating answers to two-digit addition problems. Executive function measures were collected for each individual. Data showed that (a) children's skill at both strategy selection and execution improved with age and (b) increased efficiency in executive…
Descriptors: Grade 3, Grade 5, Grade 7, Age Differences
Alibali, Martha W.; Phillips, Karin M. O.; Fischer, Allison D. – Cognitive Development, 2009
Children sometimes solve problems incorrectly because they fail to represent key features of the problems. One potential source of improvements in children's problem representations is learning new problem-solving strategies. Ninety-one 3rd- and 4th-grade students solved mathematical equivalence problems (e.g., 3+4+6=3+__) and completed a…
Descriptors: Experimental Groups, Control Groups, Problem Solving, Learning Strategies
