Math

General Math Resources

Math World

Math Page - Interactive tutorials for learning any high school math topic

Algebra

CoolMath Algebra - resources and practice

Algebasics - visual and verbal instruction in the basics of Algebra

Algebra Help - Step-by-step directions on how to solve different algebra problems

Geometry

CoolMath Geometry and Trig - resources and practice

Challenge of the 7 Cups game

Calculus

CoolMath Pre-Calculus - resources and practice

Math Fun & Games

Cut the Knot - "interactive math miscellany & puzzles" - lots of Java

KnotPlot - Information on knot theory & photos of lots of knots

MathPuzzle - "the puzzling weblog of recreational mathematics" - challenging puzzles for grades 10+ (blocked at school)