Mathematics Teacher (1972) Vol. 65, No. 4

  • Mathematics Teacher (1972) Vol. 65, No. 4

    APRIL 1972 \'OLt::\11. LX\ " =-:t.::\113ER I 'Tain't Necessarily So, or Minus Minus A Equals A Tlrnry \'em Engen Additive Inverses and NegativesTTw Different Concepts Uary L. Jfusser Garbage Collection, Sunday Strolls, and Soldering Problems ll'aller Jf eyer A = P(I + rfn)"', or How to Gain Some Interest in the Classro