Arithmetic Teacher (1965) Vol. 12, No. 1

  • Arithmetic Teacher (1965) Vol. 12, No. 1

    THE ARITHMETIC TEACHER Volume 12, number 1 JANUARY 1965 In trasystem research L eonard Pikaart and for elementary school teachers Charles Berryman Homework in arithmetic Elmer A . Koch, J r. Discovery in mathematics Ernest R. Ranucci Programmed instruction Glen E . Fincher and in elementary arithmetic H. T. Fillmer Ret