1. Cool Math .com - An Amusement Park Of Math And More! An amusement park of mathematics. Puzzles and number problems, fractals, geometry, calculus, algebra, online games, online calculators, and links. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

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5. The Math Forum Home Page Combined archive and portal to web resources, educational issues, help forums, mailing lists, and teaching materials. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

6. Math Forum Problems Of The Week Current Problems (using and submitting is free for all) Math Fundamentals PreAlgebra Algebra Geometry http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

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8. Exploring Geometry Through Puzzles And Games Exploring Geometry through Puzzles and Games MathSet Enrich your geometry curriculum and motivate students with these interesting puzzles and http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

9. Exploring Geometry Through Puzzles Games - Grades 4-8 Author Beverly Koester Developed by Peter Sharon Devine The Exploring Geometry Through Puzzles and Games MathBox enables teachers to enrich their http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

10. Nick's Mathematical Puzzles Nick's Mathematical Puzzles They range over geometry, probability, number theory, algebra, calculus, trigonometry, and logic. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

11. Mathematical Interactivities - Games, Puzzles And Other Interactive Multimedia R Mathematical Interactivities puzzles, games and other Online geometry Facts - Decide which statements about geometry are true and which are false in http://mathematics.hellam.net/

Mathematical Interactivities - Puzzles, Games and other Online Educational Resources Introduction This is a short list of some of the interactivities I have made available to play online from my websites. I'm usually writing new games and puzzles every week. However, I don't always have the time to add updates to this index. To find out what I'm working on, read my Math Games weblog Popular Math Games Online The Frog Puzzle Online - Click on the lily pads to make the frogs move across the pond by hopping or sliding. Can you work out how many moves you would need to shift any number of frogs? Flash Algebra - is it an algebra lesson about Flash, or a Flash lesson on algebra? Plus interactive tools to solve linear, quadratic and simultaneous equations. Mathematical Matches - A series of flashcard/concentration puzzles - sometimes with an added interactive twist. Covers a wide range of mathematical topics. Add your own, if you want. Interactive 100 Square Chart - Investigate patterns made by multiples of numbers in a 100 square. If that's too easy, try the

12. Cool Math .com - An Amusement Park Of Math And More! An amusement park of mathematics. puzzles and number problems, fractals, geometry, calculus, algebra, online games, online calculators, and links. http://www.coolmath.com/

Coolmath.com An amusement park of math designed for fun! Bored with math? Confused by math? Hate math? Yeah, Coolmath can fix that. Cool math Highlights: Our new site: FinanceFREAK.com Coolmath Algebra Math Reference Area (math formulas, etc.) Lemonade Stand (business math game) Same Game (a great math thinking game) Brain Bender Math Puzzles Coolmath Games (free online math games) Number Monster (great arithmetic practice) Monster Mind Reader (Can it read your mind?) Fractal Gallery (See how math makes art.) Graph IT (a free online graphing calculator) Fraction Lessons (lots of easy examples) Spike's Game Zone (free online games) Jigsaw Puzzles Cool Things (Amazing what math can do!)

13. Math Sites geometry Sites! Even Discrete Math, Trigonometry and Calculus Sites! Math puzzles and Math Brain games, puzzles, Problems, Brain Teasers More Fun http://cte.jhu.edu/techacademy/web/2000/heal/siteslist.htm

Games Clever Games for Clever People Interactive Fractals Site Java Math Games Mankala ... Quizville - Online Math Skills Practice Games More Fun Curious and Useful Math Einstein's Origami Math Cats Math Humor ... Paul's Page of Pi Puzzles AIMS Puzzle Corner Brain Teasers Cut the Knot - Interactive Puzzles Diamond 16 Puzzle ... Mathematics Puzzles - Thinks.com Nick's Mathematical Puzzles Puzzle Solvers at Cryptic Manor Puzzles and Problems Tim's Interactive Puzzle Solution Center ... The Ultimate Puzzle Site Problems Enquiring Into Number Things Escot Problem of the Week Figure This - Math Challenges for Families Get Smarter Org - Math Quiz ... Math Forum Problems of the Week (elementary through calculus) OleMiss Problems of the Week Olympiad Math Madness Problem of the Week Shack's Math Problems ... Word Problems for Kids Algebra Activities Interactivate Algebra Activities Investigating Bridges - Dan MacLeod Roller Coasters and Slope - Joanne Clarke Similar Triangles Investigation - Chuck Cooper

14. The Golden Section - The Number And Its Geometry Simple definitions; exact value and first 2000 decimal places; finding the golden section; continued fractions. Simple tricks for your calculator, puzzles and games. http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/phi.html

The Golden section ratio: Phi Contents of this Page The icon means there is a Things to do investigation at the end of the section. The icon means there is an interactive calculator in this section. What is the Golden Ratio (or Phi)? A simple definition of Phi A bit of history... Links on Euclid and his "Elements" ... More What is the golden section (or Phi)? We will call the Golden Ratio (or Golden number) after a greek letter, Phi ) here, although some writers and mathematicians use another Greek letter, tau ). Also, we shall use phi (note the lower case p) for a closely related value. A simple definition of Phi There are just two numbers that remain the same when they are squared namely and . Other numbers get bigger and some get smaller when we square them: Squares that are bigger Squares that are smaller is 4 is 9 is 100 One definition of Phi (the golden section number) is that to square it you just add 1 or, in mathematics:

15. The Geometry Junkyard: Toys Kadon Enterprises, makers of games and puzzles including polyominoes and Penrose Stewart T. Coffin s classic book on geometric puzzles, now available in http://www.ics.uci.edu/~eppstein/junkyard/toys.html

Interlocking Puzzle Pieces and other Geometric Toys Astro-Logix 3d ball-and-stick geometric construction kit. Atoma polyhedral building set. CIX and Triamant geometric construction sets, from Design Science Toys. Delta Blocks . Hop David discusses ideas for manufacturing building blocks based on the tetrahedron-octahedron space tiling depicted in Escher's "Flatworms". Design Science Toys Die-cast metal polyhedra available for sale from Pedagoguery Software. Fractiles , multicolored magnetic rhombs with angles based on multiples of pi/7. Happy cubes and other three-dimensional polyomino puzzles. Interlocking Puzzles LLC are makers of hand crafted hardwood puzzles including burrs, pentominoes, and polyhedra. Jovo Click 'n Construct . Plastic click-together triangular, square, and pentagonal tiles for building models of polyhedra and polygonal tilings. Includes a mathematical model gallery showing examples of shapes constructable from Jovo. Kadon Enterprises , makers of games and puzzles including polyominoes and Penrose tiles. Lego Pentominos , Eric Harshbarger. He writes that the hard part was finding legos in enough different colors. See also his

16. The Geometry Junkyard: Polyominoes This geometry Forum problem of the week asks for the number of different Kadon Enterprises, makers of games and puzzles including polyominoes and http://www.ics.uci.edu/~eppstein/junkyard/polyomino.html

Polyominoes and Other Animals Connected subsets of the square lattice tiling of the plane are called polyominoes . These are often classified by their number of squares, so e.g. a tetromino has four squares and a pentomino has five; this nomenclature is by analogy to the word "domino" (a shape formed by two connected squares, but unrelated in etymology to the roots for "two" or "square"). If a polyomino or a higher-dimensional collection of cubes forms a shape topologically equivalent to a ball, it is called an animal . A famous open problem asks whether any animal in three dimensions can be transformed into a single cube by adding and removing cubes, at each step remaining an animal (it is known that removal alone does not always work). Other related figures include polyiamonds (collections of equilateral triangles), polyabolos (collections of half-squares), and polyhexes (collections of regular hexagons). Anna's pentomino page . Anna Gardberg makes pentominoes out of sculpey and agate. Arranging six squares . This Geometry Forum problem of the week asks for the number of different hexominoes, and for how many of them can be folded into a cube. NebulaSearch: Polyomino Blocking polyominos . R. M. Kurchan asks, for each k, what is the smallest polyomino such that k copies can form a "blocked" configuration in which no piece can be slid free of the others, but in which any subconfiguration is not blocked.

17. Kids Math Games - Puzzles - Interactive Math Puzzle Game - Build A Square With O Geometric Shapes Spatial Learning. Drag the puzzle pieces to create a square. It s not as easy as you think! Other geometry games - Geometric Shape games http://www.apples4theteacher.com/square.html

Puzzles Coloring Pages Holiday Fun Shop A Fun Educational Website for Teachers and Kids Arts Languages Literacy Math ... Improving Student Achievement in Mathematics Part 2: Recommendations for the Classroom Interactive math games for kids Home Math Games Geometry Games - Geometric Shape Games Geometric Shapes - Spatial Learning Drag the puzzle pieces to create a square. It's not as easy as you think! Other Geometry Games - Geometric Shape Games Grandfather Tang's Chinese Tangrams More Chinese Tangrams ADD, ADHD, Literacy, ESL, Special Ed, Bilingual Ed, Gifted, Health Ed, Early Childhood Education Home Calendar Weblinks Search ... Sitemap Online Games and Resources for Toddlers, Preschoolers, Kindergarten, and Elementary Students Kid Safe Educational Website for Teachers and Home Schooling First Grade, Second Grade, Third Grade, Fourth Grade, Fifth Grade and Sixth Grade Materials Cool Web Design and Search Engine Optimization by Webstantaneous Web Marketing An Albuquerque, New Mexico Web Design and Web Marketing Company

18. Interactive Mathematics Activities Interactive Mathematics Activities for Arithmetic, geometry, Algebra, Probability, Logic, puzzles games. 4×4×4 Tic Tac Toe (spacial visualization) http://www.cut-the-knot.com/Curriculum/index.shtml

Username: Password: Sites for teachers Sites for parents Awards Interactive Activities ... Sites for parents Interactive Mathematics Activities Memory and Matching Match answers Memory - Easy Memory - Medium Memory - Hard Arithmetic 2 Pails Puzzle 3 Jugs Puzzle 3 Jugs Puzzle in Barycentric Coordinates Abacus in Various Number Systems ... Two Simple Equations Algebra Binary Color Device Breaking Chocolate Bars Candy Game: Integer Iterations on a Circle Chebyshev polynomials ... Heads and Tails counting, invariance Identities in the Multiplication Table Integer Iterations on a Circle II superposition principle Integers and Rectangles Integers and Rectangles: a Proof by Induction Integers and Rectangles: Two Simple Proofs Interest Calculations ... Merlin's Magic Squares modular arithmetic, boolean and linear algebra Minimax Principle Minimax Theorem Modular Arithmetic Parrondo Paradox Via Simpson Paradox ... Plus or Minus parity, invariance PolygonalNumbers Proizvolov's Identity Pythagorean Triples Rectangle on a Chessboard ... Squares and Circles parity, invariance Squares, Circles, and Triangles

19. Jigsaw Puzzles, Geometry Puzzles, Science Quizzes, And Games Jigsaw puzzles, geometry puzzles, science quizzes, and games both online and for purchase. http://www.hypography.com/games.cfm

Home News Science Forums Hypographies ... Jigsaw puzzles Hypography Science sites Amazon.com Games Science is fun! Waste your precious time with our jigsaw puzzles, or sharpen your brain on our science and technology quizzes. Want a puzzle? Visit our Multipuzzles store for geometry puzzles starting at $4.99. Quizzes We have lots of quizzes on topics ranging from strange inventions to historic events. There is something for everyone - and maybe you even win our prize quiz? Go to science quizzes Jigsaw puzzles We have collected images of different kinds, from beautiful auroras and shots of the Sun, to famous science images. Note: You need a java enabled browser to play. Go to jigsaw puzzles Tormod Guldvog terms for use Want more quizzes? We usually publish a new prize quiz about once a month. If you would like to write a quiz, please let us know! Contact us! Sponsor DocFizzix - Mousetrap vehicles! Advertisement Science news Hubble Finds Mysterious Disk of Blue Stars Around Black Hole by C1ay on Wed, 21 Sep 2005 11:48:55 GMT Columbia scientists develop cancer "terminator" viruses

20. Math, Puzzles, Games, Mazes, Illusions, Math Puzzles, Math Games geometry, Relativity, and the Fourth Dimension by Rudy Rucker with a stereoscopic 4d game in and round the hypercube (Java applet). Harmen van der Wal http://www.g4g4.com/geom1.htm

Homepage About News Exchange ... Contact GE- OM E TRY Puzzles Recreational Math Geometry Math Societies ... 4th Dimension Conferences New Book Beyond the Third Dimension by Thomas Banchoff, Full of Colorful Illustrations and Explanations- Highly Recommended Surfing Through Hyperspace by Pickover The Annotated Flatland: A Romance of Many Dimensions - by Edwin Abbott Abbott , Ian Stewart - Classic 1st published in 1884 Geometry, Relativity, and the Fourth Dimension by Rudy Rucker Search for the Fourth Dimension, Fine-Art Print by Salvador Dali, 31.5x23.5 Click Here The Geometry Center : is a mathematics research and education center at the University of Minnesota. The Center has a unified mathematics computing environment supporting math and computer science research, mathematical visualization, software development, mathematical visualization, software development, application development, video animation production, and K-16 math education. " Internet Resources for Advanced Geometry " This list contains some of the best resources for advanced geometry. For a more exhaustive list, or to find materials that fit your specific needs, see also the Forum's Internet Mathematics Library .." NEW!

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