Mathematics Teacher (1969) Vol. 62, No. 5
MAy 1969 \"OLUME LX II. ~UMBP.Tl 5 A Heuristic Approach to Pythagorean Triples ./oh n II' ilson A Classroom Illustration of a Nonintuitive Probability Richard S . Kleber Friday-the-Thirteenth IVmiam T . Bailey Lively Functions for Algebra One Louis R. Jl cCreery An educator talks about the 0/G/AC teaching system •• Thi
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