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Internet Math Challenge

A weekly math puzzle for students in grades K-12 from the University of Idaho, Department of Mathematics.

Math Nets Daily Puzzle

Set - The Game of Visual Perception

Math puzzles for kids from the AIMS Foundation.

Math Line Puzzles

Brain Tainment

Tests, Tools, and Games for your Brain.

Center for Innovation in Mathematics Teaching - Puzzle Pages

A collection of puzzles to challenge high school students.

Ivar Peterson's Mathland

Magic Decoder Game

Crack the code of a secret message encrypted in a simple substitution cipher.

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