games and puzzles

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• - A website dedicated to the puzzling world of mathematics and computer programming.
  
• - Numerous puzzles, links, puzzle solver, and a generator.
  
• - Animations that develop the theory behind such puzzles as the Rubik cube.
  
• - A collection of riddles and logic puzzles with solutions.
  
• - Mathematics teacher provides puzzles for students.
  
• - Original brain teasers with solutions.
  
• - Learn math through games and quiz-oriented tutorial.
  
• - Indian site featuring calculation tricks and math puzzles.
  
• - Interactive math problems for abilities ranging from middle school to university.
  
• - Puzzles for web, computers, and print; ambigrams.
  
• - A collection of puzzles at high school level. Does not include answers.
  
• - Classic puzzles and riddles requiring only simple logic and elementary math.
  
• - Interactive logical and mathematical puzzles with feedback and detailed solutions.
  
• - A collection of mathematical puzzles, jokes and articles.
  
• - Collection of original numerical-logic puzzles. Many are long and difficult, involve sorting and comparing long lists and are intended to be solved using a good spreadsheet program.
  
• - A tough but simply defined problem which demonstrates key issues in probability.
  
• - Collection of brain teasers from the author of IQ books.
  
• - Over one hundred and fifty math problems ranging from basic math to differential equations.
  
• - Object of puzzle is to try to get color pieces to create certain patterns in cube.
  
• - Challenging puzzles and problems.
  
• - Pastime and activity links for various geometric patterns, polygons and polyhedra by Jill Britton.
  
• - Interactive puzzle archive with descriptions for puzzle construction and a special childrens puzzle page.
  
• - Puzzles collected by Guy Kindler, most requiring some undergraduate mathematical knowledge. Some hints are provided.
  
• - A demonstration of the symmetry and transformational properties of the Platonic and Archimedean solids.
  
• - With links to related sites. Compiled by Torsten Sillke.
  
• - Compiled by Mike Keith. Examples of various genres.
  
• - Collection of Java-based educational puzzles.
  
• - Description and instruction of using the ancient Pythagorean Abacus to do arithmetic.
  
• - Logic problems, where equations are mixed up. In various formats like boxes, crosses, diagonals, mazes. Free download.
  
• - Logic puzzles and riddles with some solutions.
  
• - Java-based math resource including articles, puzzles and links.
  
• - Educational puzzles, brain teasers, and word games such as anagrams, cryptograms, alphametics, doublets, tangrams.
  
• - Examples of cryptarithms, with prize competitions for subscribers.
  
• - 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.
  
• - Interactive math help for K-12 students with flashcards, Math Wordfind, Homework Helper and worksheets.
  
• - Famous mathematical problems, puzzles, facts, games and trivia.
  
• - Puzzles, books, games and tests with designed by Lloyd King, author of "Test Your Creative Thinking".
  
• - Brain teasers, articles and puzzles forum.
  
• - Celebrates math puzzles and mathematical recreations.
  
• - Games that interest John Conway including Rim and Traffic Jam.
  
• - Lateral puzzles from "Puzzles for the High IQ" author Lloyd King and founder of The Puzzle Wizards SiteRing.
  
• - Teaches and assesses fluency of multiplication and division tables using online cards. Submit data and compare results.
  
• - Resources, problems and forum for teachers and students in mathematics.
  
• - Play online Sam Lloyd's "15" puzzle The funny story of this game Mathematical implications of this game Some funny logical problems with the 15 game.
  
• - A collection of riddles, puzzles, and technical interview questions, with a discussion forum.
  
• - Tile a spheroid working room aperiodically or periodically. Includes free demo download.
  
• - A collection of puzzles, with hints and full solutions. Compiled by George Moody.
  
• - Logical and mathematical brain teasers, with an indication of difficulty. Hints are provided; solutions are available by email.
  
• - Math challenges Southwest Missouri State University in three levels of difficulties.
  
• - Detailed exploration of a selection of mathematical topics.
  
• - Instructions, examples, references and links.
  
• - Educational and recreational puzzles for teachers, students and parents. Each puzzle is graded by difficulty and has a hint. Solutions are available to members.
  
• - Puzzles in which letters or symbols are substituted for the digits in an arithmetical operation like addition.