Here are several resources for the class:

• Journals and magazines
 These science magazines often include a "mathematics" column
• Scientific American
• American Scientist
• The Sciences
• Science
• New Scientist
These mathematics magazines often include "interesting" articles appropriate for this class
• Journal of Recreational Mathematics
• Quantum
• Mathematical Intelligencer
• Mathematics Magazine
• Search engines
 
• The Ball State Library On-line Index includes EXAC ERC1 ERC2 NABS
• The Ball State Library link to MathSci Net indexes essentially all mathematics articles.
• The American Mathematical Society Mathematical Digest
• The American Mathematical Society What's New in Mathematics
• The Mathematical Association of America MathLand
• The Mathematical Association of America Students Page
• Recreational Mathematics Index
• MathLinks
• David Rusin's Games Page

Here are some specific links for topics in the class
• Rubik's Cube by Song Li
• Rubik's Cube by Karl Hornell
• Mathematica program for Rubik's Cube
• Probability and the Three Doors
• The SET Game Co. Homepage
• Wild-Card Poker A Peterson MATHLAND Column
• Monopoly A Peterson MATHLAND Column
• The rules for 500 Rummy
• Minesweeper
• Pass the Pigs