These sites were originally intended to help my middle school son with math. Anyone should try them that would like to challenge their math thinking and get ahead.
Signed Integers Learn about how integers work.
Mystery Picture A fun game using integers
Integers-Operations with signed numbers Learn how to add, subtract, multiply, and divide integers.
Fun Brain Fresh Baked Fractions
Soccer Shootout A game using fractions.
Learning Planet Fraction Frenzy
AAA Math Fractions
Cyberchase Melvin's make a match.
Math Power Algebra
Math.com Pre-Algebra
AAA Math Algebraic equations
AAA Math More algebraic equations
Kids Math Book Algebra
Math.com Algebra Worksheet Generator
Math Power Videos on math topics
Math Power Online algebra assignments
Grade seven problem solving Be smarter than Homer Simpson.