Mathematics Teacher (1975) Vol. 68, No. 7

  • Mathematics Teacher (1975) Vol. 68, No. 7

    NOVEMBER 1975 VOLUME 68, NUMBER 7 THE NATIONAL COUNCIL OF TEACHERS OF MATHEMATICS Application• of Tr•natorm•ttona to Toplcta In Element•ry Geometry, P.tl Stanley B. Jackson Teetlng In ... theiMtlca-WMt Are We R•IIJ Me•aurlng? Richard Crouse and Carl Jacobson Derlvdvee ol Trigonometric FunctloM Rev181ted R. S . Luthar A