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Peer reviewedZollman, Alan – Arithmetic Teacher, 1990
Discusses the geometrical array of the keys on a calculator that can be turned into a problem-solving, problem-posing situation for the upper elementary or middle school classroom. Provides figures showing the arrays, including rows, diagonals, crosses, rhombi, angles, and squares. Lists seven references. (YP)
Descriptors: Arithmetic, Calculators, Computation, Elementary Education
