Mathematics Teacher (1978) Vol. 71, No. 9
AN OFFICIAL JOURNAL OF THE NATIONAL COUNCIL OF TEACHERS OF MATHEMATICS The Mathematics Teacher is devoted to the improvement of mathematics instruction in the junior high schools. senior high schools. two-year colleges, and teacher-education colleges. EDP.R.ESS Member of the: F.duca ll o n~ l Pre5s A~soc i :H ion of Am
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