Math

Challenging word problems, spanning basic math to differential equations.

Science, Math, Recreations, Games and Puzzles - Aha! Puzzles. Puzzles, books, games and tests with designed by Lloyd King, author of Test Your Creative Thinking.

Educational and recreational puzzles for teachers, students and parents. 1000 puzzles collected, including Geometry, Logic, Math, Misc, Weight and Moves categories. Every puzzle has an image, hint and solution. Be a member for puzzle solutions.

Math Games, Math Puzzles, and Mathematical Recreations

Science, Math, Recreations, Competitions - Rocket City Math League. International mail-in competition for avid students in mathematics.

Science, Math, Recreations, Competitions - Math Olympiad for Elementary Schools. Contest open to all students grade 8 to 4.

Science, Math, Recreations, Competitions - Australian Primary Schools Mathematical Olympiads Inc.. Open to primary schools in Australia, New Zealand and surrounding countries.

Science, Math, Recreations, Competitions - Great Plains Math League. Sponsors several high school math contests in Missouri, Iowa and Kansas.

Berkeley Math Circle Evaluation Form

Science, Math, Recreations, Competitions - USA Mathematical Talent Search (USAMTS). A free mathematics competition available to all high school students in the United States.

Science, Math, Recreations, Competitions - MATHmodels. A online team competition where students compete to solve real-life problems using mathematical modeling.

Science, Math, Recreations, Competitions - MathCounts. United States national math coaching and competition program for middle school students.