Mathematics Teacher (1959) Vol. 52, No. 4

  • Mathematics Teacher (1959) Vol. 52, No. 4

    APRIL 1959 Feed it back FRANCIS SCHEID The geometry of the fixed-compass ARTHUR E. HALLERBERG Trisecting any angle ALEX J. MOCK Novel drill material for signed numbers WILLIAM G. MEHL The Mathematics Teacher is tlw official journal of The National Council of Teachers of M atlwmatics devoted to tM interests of mathematt