Arithmetic Teacher (1975) Vol. 22, No. 4

  • Arithmetic Teacher (1975) Vol. 22, No. 4

    VOLUME 22, NUMBER APRil: 197f NATIONAL COUNCIL OF TEACHERS OF MATHEMATICS NCTM's 34th YEARBOOK INSTRUCTIONAL AIDS IN MATHEMATICS CONTENTS edited by emil j. berger • Perspective, Purpose, and Profile • Instructioona Spaces • The Textbook as an Instructional Aid • Other Printed Materials • Teaching Machiine and Programed