Arithmetic Teacher (1963) Vol. 10, No. 6

  • Arithmetic Teacher (1963) Vol. 10, No. 6

    THE ARITHMETIC TEACHER Volume 10, number 6 OCTOBER 1963 Arithmetical abstractionsproggres toward maturity of concepts under differing programs of instruction William A. Brownell Beginning number experiences E. E. Andrews and and structured materials L. Doyal Nelson The elementary school principal and mathematics instru