Mathematics Teacher (1968) Vol. 61, No. 4
NATIONAL COUNCIL OF TEACHERS OF MATHEMATICS APRIL 1968 VOLUME LXI, NUl\IDER 4 Congruence Geometry for Junior High School l V alter J. Sanders and J . Richard Dennis Divisibility by 7, 11, 13, and Greater Primes R . L. Morton Mathematics by Analogy James M. 111 oser Gaussian, Parabolic, and Hyperbolic Numbers William Mi
This is available to members of NCTM. Please log in now to view this article. If you are interested in a NCTM membership join now.