Mathematics Teacher (1955) Vol. 48, No. 2

  • Mathematics Teacher (1955) Vol. 48, No. 2

    FEBRUARY 1955 The engineer in industry-seen and unseen mathematics EVERETT S. LEE Rate of progress in learning arithmetic ESTHER J , SWENSON A teaching unit on graphs NATHAN 8. WASHTON AND ETHEL B, FRIEDMAN Modern trigonometry RICHARD V, ANDREE Sebastian and the uwolf" THEODORE C. RIDOUT Developmental mathematics in th