MathBlues
[ Teens/Mature Teens ]  Articles, discussion groups, and news that aim to show high school students the fun, creative side of math. Also provides SAT tips and homework help resources. Encourages submission of writing and artwork by students. 
Mathematics Magazine for Grades 112
[ Kids/Teens/Mature Teens ]  Monthly publication offering math help, list of competitions, and links. 
Maths Is Fun
[ Kids/Teens ]  Includes lessons, games, puzzles, and offline activities. 
Mathsforkids
[ Kids/Teens ]  This site has been created so that students can have fun and practice math. Includes lessons in addition, subtraction, multiplication, geometry. 
MathStories.com: Word Problem Solving Strategies
[ Kids ]  Tips for solving word problems for K5th graders. 
Mathwizz.com
[ Kids/Teens/Mature Teens ]  Interactive worksheets and quizzes in basic math, prealgebra, algebra, geometry, and statistics. Find calculators to compute interest and conversion tools for currency, area, temperature, and other units of measurement. Also runs a weekly math contest. 
More Mathematics than Science
[ Teens ]  Learn how to use expressions to represent numbers, work with variables and create special drawings to represent equations. Also has a brief introduction to trigonometry and curve fitting. Includes interactive graphs. 
Online Math Learning
[ Teens/Mature Teens ]  Learn basic concepts behind arithmetic, algebra and geometry. Includes some SAT test preparation help and math trivia. 
Plot the Robot
[ Kids/Teens ]  Activity site involving multiplication and calculator work. The answers are coordinates which can be joined in sequence to generate simple pictures. 
Powers of Ten
[ Teens/Mature Teens ]  Produced by Charles and Ray Eames, the video 'Powers of Ten' has been converted into web images. Explores over 42 powers of ten in a series of images, beginning with a photo of someone lying on the grass. Shows the scale of the universe and atoms. 
Ribbit's Math Ventures
[ Kids/Teens ]  Math problems that tell a story about a frog named Ribbit. For K8. 
Teach R Kids Math
[ Kids ]  A large collection of interactive worksheets that allows kids to practice basic math skills. 
The Abacus: The Art of Calculating with Beads
[ Kids/Teens/Mature Teens ]  Introduces the abacus, relates its history, and shows how to perform basic mathematical operations on it. Also answers questions about the ancient tool and shows how to build one with Legos. 
Themathlab.com
[ Teens ]  A collection of educational math games and lessons for prealgebra, algebra, and geometry. Includes practice problems and drills, a math dictionary, and a humor section. 
