Mathematics Teacher (1977) Vol. 70, No. 5
AN OFFICIAL JOURNAL OF THE NATIONAL COUNCIL OF TEACHERS OF MATHEMATICS The Mathematics Teacher is devoted to the improvement of mathematic!) instruction in the junior high school , senior high chools. two-year colleges. and teacher-education colleges. EDPRESS \ k mhcr ,,I the: I uuc.tllllll.d l'rc" \ "'l(ldtll>n \II \
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