National Council of Teachers of Mathematics
The Math Forum: Middle School Archive
This site from the Math Forum provides a list of links to many questions from the Dr. Math archive about exponents. This is a good site to use to direct you to different but associated information on the subject.
Math Playground
Math Playground
A collection games, word problems, logic puzzles, and math videos that elementary and middle school students can practice their math skills. Model math problems using blocks, work with online flash cards, complete worksheets, and more.
My Science Site
Middle School Science: Matter Puzzle [Pdf]
This resource presents a math game. A great way for students to reinforce their knowledge and understanding of the topic of matter. This resource is in PDF form; requires Adobe Reader.