John Lamb Jr.
One purpose of this article is to help readers identify the animal that corresponds to the year of their birth. Another is to define a structure on the Chinese zodiac so that the subsets of compatibles and opposites form closed substructures with interesting mathematical properties.
Jennifer Szydlik
Problem situations support students in discovering the multiplication principle, permutations, combinations, Pascal's triangle, and relationships among those objects in a concrete context.
Ann Crawford, William Scott
Examples that can be used to develop the concept of slope as a rate of change through three modes of learning: visualization, verbalization, and symbolization.
Gina Foletta, David Leep
A lesson focused on particular connections between geometry and measurement: How does change in shape affect the area of the interior region of parallelograms with the same perimeter?
Robert Iovinelli
This article does not completely define the mathematics of chaos. It simply presents an opportunity for students to become familiar with the fundamental premise of iteration for this relatively new branch of mathematics.