A very introductory paper on
(covers substitution ciphers, the Vigenere cipher, one-time pads, the Hill
cipher), developed as a professional development workshop given to middle
school teachers as part of the
MSTP project I was involved in.
Finding Roots of Complex Polynomials with Newton's Method.
Thesis, Boston University (1989).
(This includes a brief addendum from Sept '89;
electronic versions of some of the figures have been lost, and have been
replaced by scans from a printout from 1990. Pagination differs slightly
from the original. )