Mathematics Teacher (1952) Vol. 45, No. 3

  • Mathematics Teacher (1952) Vol. 45, No. 3

    THE MATHEMATICS TEAC HER Volume XLV Number 3 Lefs Forget Mental Transfer By D AVID SKOLNIK Central High School, Newark, N.J. Introduction. The doctrine of mental discipline dates back to the time when the mind was regarded as a muscle that could be exercised. More recently the doctrine was challenged by stubborn facts