Mathematics Teacher (1979) Vol. 72, No. 1
AN OFFICIAL JOURNAL OF THE NATIONAL COUNCIL OF TEACHERS OF MATHEMATICS The Marhemarics Teacher is devoted to the improvement of mathematics instruction in the junior high schools, enior high schools. two-year colleges, and tea cher-education colleges. E DPRESS Mcmller llf the 1-duc.otwn.ol Pre" 1\"oco Jto\ln of J\mcnca
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