: Science : Math : Recreations : Games_and

» 15 Puzzle of Sam Lloyd
   Play online Sam Lloyd's "15" puzzle. The funny story and mathematical implications of this game. Some funny logical problems with the 15 game.

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   http://www.holotronix.com/samlloyd15.php

» A Primer on Cryptarithmetic
   Instructions, examples, references and links.

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   http://www.geocities.com/Athens/Agora/2160/primer.html

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

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   http://www.aplusmath.com/

» AIMS Puzzle Corner
   Provides over 100 puzzles with the goal of creating an engaging learning environment.

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   http://www.aimsedu.org/puzzle/

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

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   http://www.ahapuzzles.com

» Algebraic Math Puzzles
   A collection of puzzles at high school level. Does not include answers.

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   http://www.lifesmith.com/mathpuz1.html

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

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   http://www.alientiles.com/

» Alphametic Puzzles
   Numerous puzzles, links, puzzle solver, and a generator.

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   http://www.tkcs-collins.com/truman/alphamet/

» Alphametics Page
   Compiled by Mike Keith. Examples of various genres.

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   http://members.aol.com/s6sj7gt/mikealp.htm

» Ben Robinson's Cross-Number Puzzles
   A collection of cross-number puzzles: similar to crosswords, but using digits instead of letters. Many involve complex mathematical reasoning.

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   http://www.users.bigpond.com/bendr/xwd/numeric/index.html

» Brain Teasers and Maths Puzzles
   Interactive logical and mathematical puzzles with feedback and detailed solutions.

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   http://www.syvum.com/teasers/

» Brain Teasers by QBrute
   Original brain teasers with solutions.

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   http://www.angelfire.com/empire/qbrute/

» Calculus-Help Problem of the Week Archive
   Calculus based problems range from easy to difficult.

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   http://www.calculus-help.com/problem.html

$Colorful Mathematics$

» 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.

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   http://www.math.ucalgary.ca/~laf/colorful/colorful.html

» Contest Center Cryptarithms
   Examples of cryptarithms, with prize competitions for subscribers.

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   http://www.contestcen.com/rithms.htm

» Creative puzzles
   Interactive puzzle archive with descriptions for puzzle construction and a special children's puzzle page.

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   http://www.creatievepuzzels.com/

» Dick's Math Puzzle Page
   A collection of mathematical puzzles, some original, with fully worked solutions.

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   http://www.mod2.org/

» Downloadable and online games
   A variety of Flash- and Java-based games and puzzles.

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   http://www.gameintellect.com/

» 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.

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   http://www.freepuzzles.com/

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

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   http://www.dmi.units.it/~logar/duek2/index_engl.html

» Interactive Mathematics Miscellany and Puzzles
   Java-based math resource including articles, puzzles and links.

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   http://www.cut-the-knot.org/

» Logic Puzzles
   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.

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   http://www.geocities.com/bob_kraus_2000/

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

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   http://www.logicville.com/

» Magic Math Kingdom
   Learn math through games and quiz-oriented tutorial.

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   http://www.nes-lab.com/english2/

$Math Puzzles$

» Math Puzzles
   Logic puzzles and riddles with some solutions.

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   http://www.math.utah.edu/~cherk/puzzles.html

» MatheMagic
   A collection of mathematical puzzles, jokes and articles.

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   http://geocities.com/mathimoh/

» MatheMajik
   Indian site featuring calculation tricks and math puzzles.

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   http://mathemajik.tripod.com/

» Mathematical Games
   A collection of pencil and paper games with mathematical content. Many can be played through the site.

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   http://www.madras.fife.sch.uk/maths/games/

» Mathematical Recreations
   Detailed exploration of a selection of mathematical topics.

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   http://www.mathrec.org/

» Mathproblems.info
   Over one hundred and fifty math problems ranging from basic math to differential equations.

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   http://mathproblems.info/

» Mathpuzzle.com
   Celebrates math puzzles and mathematical recreations.

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   http://www.mathpuzzle.com/

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

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   http://www.mathwizz.com/

» Mixed Up Math
   Logic problems, where equations are mixed up. In various formats like boxes, crosses, diagonals, mazes. Free download.

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   http://www.kprobe.com/kprobe/mu.htm

» Mr Titen's More Than Math
   Mathematics teacher provides puzzles for students.

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   http://www.geocities.com/EnchantedForest/Tower/1133/

» Nandor's Exhaustive Chemical Words Pages
   Lists all the English words, word squares, and magic squares that can be written using chemical symbols.

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   http://www.wellington.org/nandor/chemwords/chemwords.htm

» Paul Hsieh's Puzzles
   Logical and mathematical brain teasers, with an indication of difficulty. Hints are provided; solutions are available by email.

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   http://www.azillionmonkeys.com/qed/puzzles.html

» Perfect Times
   Teaches and assesses fluency of multiplication and division tables using online cards. Submit data and compare results.

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   http://www.perfect-times.co.uk/

» Polyhedra Links
   Pastime and activity links for various geometric patterns, polygons and polyhedra by Jill Britton.

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   http://britton.disted.camosun.bc.ca/jbpolyhedra.htm

» Polymorf - Symmetry of Polyhedra
   A demonstration of the symmetry and transformational properties of the Platonic and Archimedean solids.

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   http://www.polymorf.net/

» Puzzle of the Week Archives
   A collection of puzzles, with hints and full solutions. Compiled by George Moody.

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   http://ecg.mit.edu/george/puzzles/

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

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   http://www.pythabacus.com/

» Scott Kim
   Puzzles for web, computers, and print; ambigrams.

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   http://www.scottkim.com/

» Storkey: Two Envelope Paradox
   A tough but simply defined problem which demonstrates key issues in probability.

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   http://homepages.inf.ed.ac.uk/amos/doubleswap.html

» The Contest Center
   Classic puzzles and riddles requiring only simple logic and elementary math.

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   http://www.contestcen.com/classic.htm

» The Enigmatic World of Philip Carter
   Collection of brain teasers from the author of IQ books.

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   http://www.knowl.demon.co.uk/

» 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.

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   http://www.sprucelog.com/lmp/

» The Puzzling World of Barry R. Clarke
   Brain teasers, articles and puzzles forum.

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   http://barryispuzzled.com/

» Torus and Klein Bottle Games
   Collection of Java-based educational puzzles.

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   http://www.geometrygames.org/TorusGames/index.html

» Wu's Riddles
   A collection of riddles, puzzles, and technical interview questions, with a discussion forum.

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   http://www.ocf.berkeley.edu/~wwu/riddles/intro.shtml

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