The interactive pages listed below supplement a **textbook for Discrete Mathematics**, written by myself and Winston Crawley, and published by John Wiley & Sons, Inc. Complete information about the book can be found at the Wiley website or on amazon.com.

Early versions of the interactives for this site exist for browsers that support Adobe Flash Player at (email me if you'd like a link to this page). The development of these **computer-based material** for teaching and learning mathematical reasoning and proof were initially funded through a **National Science Foundation educational materials development grant** (NSF DUE 0230755). I have run several workshops over the years on the use of this material for teaching Discrete Mathematics and introduction to proof.

Douglas Ensley, Ph.D.

Professor of Mathematics

Shippensburg University

Shippensburg, PA 17257

Phone: 717.477.1406

deensley@ship.edu