This category contains educational web sites containing mathematical problems, games, puzzles, or quizzes. Sites whose emphasis is on mathematical education are welcome to submit in this category.

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### Sites 42

A+ Math

Interactive math help for K-12 students with flashcards, Math Wordfind, Homework Helper and worksheets.

Aha! Puzzles

Puzzles, books, games and tests with designed by Lloyd King, author of "Test Your Creative Thinking".

Algebraic Math Puzzles

A collection of puzzles at high school level. Does not include answers.

Alien Tiles

Object of puzzle is to try to get color pieces to create certain patterns in cube.

Alphametic Puzzles

Numerous puzzles, links, puzzle solver, and a generator.

Alphametics and Cryptarithms

Puzzles in which letters or symbols are substituted for the digits in an arithmetical operation like addition.

Alphametics Page

Compiled by Mike Keith. Examples of various genres.

Brain Teasers and Maths Puzzles

Interactive logical and mathematical puzzles with feedback and detailed solutions.

Brain Teasers by QBrute

Original brain teasers with solutions.

A Cleverly-Titled Logic Puzzle Blog

A large and varied collection of puzzles by logicsmith Grant Fikes.

Colorful Mathematics

Educational software presents advanced mathematics to K-12 students in a game-oriented approach, using coloring and drawing techniques to illustrate concepts from graph theory and computer science.

The Contest Center

Classic puzzles and riddles requiring only simple logic and elementary math.

Contest Center Cryptarithms

Examples of cryptarithms, with prize competitions for subscribers.

Dick's Math Puzzle Page

A collection of mathematical puzzles, some original, with fully worked solutions.

Downloadable and online games

A variety of Flash- and Java-based games and puzzles.

Free Puzzle Collections

Educational and recreational puzzles for teachers, students and parents. Each puzzle is graded by difficulty and has a hint. Solutions are available to members.

Group Games

Animations that develop the theory behind such puzzles as the Rubik cube.

Hot Pepper Math Puzzles

Fun, interactive brain teasers you can play anywhere.

Interactive Mathematics Miscellany and Puzzles

Java-based math resource including articles, puzzles and links.

IQ Flash: Online games, puzzles

New printable puzzles, math games, board games, and logic games in flash.

The Little Math Puzzle

The Little Math Puzzle has been a K-12 Internet activity since 1995 for grades 5-9. Currently the puzzles have ceased but the site maintains complete archives of past problems.

Logicville

Educational puzzles, brain teasers, and word games such as anagrams, cryptograms, alphametics, doublets, tangrams.

Magic Math Kingdom

Learn math through games and quiz-oriented tutorial.

Math Puzzles

Logic puzzles and riddles with some solutions.

Mathematical Recreations

Detailed exploration of a selection of mathematical topics.

Mathpuzzle.com

Celebrates math puzzles and mathematical recreations.

Mathschallenge.net

A website dedicated to the puzzling world of mathematics, with a discussion forum.

Mathschallenge.net

A website dedicated to the puzzling world of mathematics.
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Mathwizz

Interactive math problems for abilities ranging from middle school to university.

Missouri State University's Problem Corner

Math problems in three levels of difficulty: high school, advanced, and challenge. With archives.

Mr Titen's More Than Math

Mathematics teacher provides puzzles and games for students.

Nick's Mathematical Puzzles

A collection of puzzles, with hints, solutions, and links to related mathematical topics.

Nick's Mathematical Puzzles

A collection of puzzles, with hints, solutions, and links to related mathematical topics.
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Paul Hsieh's Puzzles

Logical and mathematical brain teasers, with an indication of difficulty. Hints are provided; solutions are available by email.

Puzzle of the Week Archives

A collection of puzzles, with hints and full solutions. Compiled by George Moody.

The Puzzling World of Barry R. Clarke

Brain teasers, articles and puzzles forum.

Pythabacus

Description and instruction of using the ancient Pythagorean Abacus to do arithmetic.

Scott Kim

Puzzles for web, computers, and print; ambigrams.

Sequence Puzzles and Problems

Find the next entry in each sequence. With links to related sites. Compiled by Torsten Sillke.

Storkey: Two Envelope Paradox

A tough but simply defined problem which demonstrates key issues in probability.

Torus and Klein Bottle Games

Collection of Java-based educational puzzles.

Wu's Riddles

A collection of riddles, puzzles, and technical interview questions, with a discussion forum.

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