Arithmetic Teacher (1975) Vol. 22, No. 8

  • Arithmetic Teacher (1975) Vol. 22, No. 8

    e ~ eac NATIONAL COUNCIL OF TEACHERS OF MATHEMATICS er VOLUME 22, NUMBER 8 DECEMBER 1975 you need ... edited by Jon L. Higgins, a joint project of the NCTM and the Educational Resources Information Center (ERIC) Clearinghouse for Science, Mathemattics and Environmental Education. Contributions by seventeen authors have