Mathematics Teacher (1965) Vol. 58, No. 7

  • Mathematics Teacher (1965) Vol. 58, No. 7

    NOVEMBER 1965 A portrait of v2 LAWRENCE A. RINGENBERG Problem solving in mathematics, II TRUMAN BOTTS Buffon's needle: stochastic determination of 1r WALTER THUMM Addition and subtraction on the soroban VICTOR E . HAAS The end of a perfect number KEN NETH HANAWALT Relations and functions EDSEL F. STIEL Aa .-z jOUJ'fltl