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M. C. Escher
Escher and the Droste effect How to create Escher-esque drawings... Escher for Real many of the so-called 'impossible' drawings of M. C. Escher, realized as actual physical objects Inspirations a short movie inspired by Escher M.C. Escher Official Website Picture Gallery of all his works, plus bio, interview, and more... The Mathematical Art of M.C. Escher a platonic realms minitext... far more interesting than it sounds! World of Escher Learn about Escher's art, plus Penrose's puzzles, and submit your own or vote for your favorite modern tessellations! 
FractalsChaosPro a freeware fractal generator for Windows... Chaoscope a 3D strange attractors rendering software Cool Math Tessellations, fractals, dampening functions, careers in math and cool links, too Fractal Geometry a great collection of pages, a first course in fractal geometry Fractals a fractals unit for elementary and middle school students (that adults are free to enjoy) Fractint (PC) Fractal generator software, plus lots of fractals right on the pages... Historical Fractals in Art & Architecture antennas to cabinets, architecture to suburban subdivision... The Infinite Art of Janet Parke fractal art, abstract images which reflect the beauty of mathematics The Unravelling of the Real Mandelbulb the 3D equivalent to the 2D Mandelbrot set Math...
+Plus Magazine introduces readers to the beauty and the practical applications of mathematics 1-100 Factored and other posters for our visual-spatial kids, you have to see this one to believe it! The 20 Greatest Equations Maxwell's, Euler's, Pythagoras', Einstein's... The Abacus the art of calculating with beads, from its history, to its use today Absurd Math Pre-algebra from another dimension... Algebasics 
An online Algebra course in 16 chapters, with great instruction and examples! (Flash enabled)algebra.help a collection of lessons, calculators, and worksheets to help students... Algebra Lessons from Absolute Value, to the Quadratic Formula, to Vertical Line Test... Arthur Benjamin does "Mathemagic" a TED Talk you have to see to believe! Art of Problem Solving For avid students of mathematics, including the largest, most active online problem solving community in the world, USAMTS Talent Search, Math Jams guided improvisational problem solving sessions, and more! Babylonian Mathematics Our first knowledge of mankind's use of mathematics comes from the Egyptians and Babylonians BeatCalc Beat the Calculator, with this weekly trick (mailing list, type "subscribe" in message body) 
BeatCalc BeatCalc archives with over 400 math tricks! Bob - Penrose Tiling Generator and Explorer (downloadable software) BrainPop Health, science, technology, math, English and more... (some free, some subscription)Calculus 'Thrift Shop' Parody: Teens' Hilarious Macklemore Cover For School Project Can you solve Franklin's puzzle? Benjamin Franklin stumps us once more! Change Maker the Cash Register Game Cinema Fiction vs. Physics Reality, or The Geometric Progression of Vampires Classic Fallacies several proofs that 2=1, and more... clickmazes, unique interactive puzzles and mazes, including Oskar's collection CMS Math Projects for Science Fairs Cogito.org news and features, questions and answers, even mentors, in math and science!Convert-me.com Units conversion / metric conversion online Cool Math Tessellations, fractals, dampening functions, careers in math and cool links, too CyberChase fun interactive arithmetic games Encyclogram explore harmonograms, spirographs, and lissajous figures EPGY K8 Puzzle Page although only EPGY students can compete, these are still great puzzles for everyone! eTutor Graphing Calculator a great tool for math students of all ages! Even Number proof even zero is an even number! ExploreMath.com Advanced math concepts, tons of interactive activities... Fermat prime numbers Fermat (1601-1665) conjectured that every number of the form 22x+1 is prime... Fibonacci Numbers and the Golden Section Fibonacci's show up everywhere! Franklin Institute Online: Educational Hotlist from Art to Math to Music to Science and more... Girls Go Tech discover careers and explore games in math, science and technology... especially for girls! Hex a simple, yet elegant, board game, invented by John Nash (and independently by Piet Hein) - can you find your path? (Java) How to Calculate Pi by Throwing Frozen Hot Dogs an amazing experiment that actually works! I Will Derive Just a fun little song (parody of "I will survive") for all of us who've taken calculus If the IRS Had Discovered the Quadratic Formula for our mathies, especially those old enough to have filed taxes (requires Adobe Reader) Illuminations Activities interactive math from Illuminations Interactives from Annenberg Media Learner... Geometry 3D Shapes Statistics and more... It slices, It dices an introduction to the ʃ of calculus JuggleMaster download, and create your own juggling patterns! Kaleidoscope Painter A mesmerizing site! Kenny's Math and Physics Help Great explanations for good questions in math and physics KnotPlot Site knots and links, viewed from a (mostly) mathematical perspective, including free KnotPlot program download Lure of the Labyrinth digital game for middle-school pre-algebra students, with a wealth of intriguing math-based puzzles wrapped into an exciting narrative game in which students work to find their lost pet - and save the world from monsters! MacTutor History of Mathematics archive mathematician biographies, math history, and more... and it's interesting! Make-a-Flake Create your own interactive snowflakes - great art, great symmetry... Mastermind choose 2 to 6 colors, and play! Math Apprentice Math is the path to anything you want to be... skateboard through town and find out! Math Baseball from FunBrain, Score runs with your math skills FunBrain.com Click here for other FunBrain activities MathCandy! "I make pictures with candy and math. You get to look at them!" But it's far more than that... The Math Circle a program of courses designed for students who enjoy math and want the added challenge of exciting topics that are normally outside the school curriculum... The Math Dude Quick and Dirty Tips Simple answers to tricky math questions, from Addition and Subtraction to the Golden Ratio and Fibonacci!Math Forum from Drexel, including these and more... Ask Dr. Math answers to any question you might have, plus mail in support! MathMagic monthly math challenges K-8 Math Problems & Puzzles tons of great puzzlers Math Tips and Tricks and puzzles Problems of the Week bi-weekly problems in Math, Pre-Algebra, Algebra and Geometry Math Forum Problem of the week podcast Math in the Movies Oz, Die Hard, Bedazzled, and more... Math-Mate hundreds of free math tutorial lessons filled with explanations and handy hints MathMovesU an interactive world of math fun! (middle school level+, by Raytheon) Math Open Reference: Volume 4 Plane Geometry great interactive applets demonstrate ellipses, tangents, and much more! MathPlayground Logic Games Creative logic puzzles for all ages! Check out Civiballs, Factory Balls and more... Math, Physics & Engineering Applets Oscillations and Waves, Acoustics, Electricity and Magnetism, and lots more! Math Playground Interactive math puzzles, including Rubik's Cube and the Towers of Hanoi, among others Mathematical Quotations Server "Life is good for only two things, discovering mathematics and teaching mathematics"-- Sim鯮 Poisson Mathematics with Alice for anyone interested in learning more about Mathematics, but who find Math textbooks too dry Mathematics is Everywhere poster campaign featuring the ever growing importance of Mathematics in modern society... MathNerds.com Free, discovery-based, mathematical guidance via an international, volunteer network of mathematicians... Maths is Fun tons of fun, from basic math to data, geometry, money, algebra and more. Don't miss the games... Mega Mathematics from Hotel Infinity to Graphs and Knots to Map Theory, tons of great math! Mudd Math Fun Facts Divisibility by Seven, Math and Calculus Limericks, Goldbach's Conjecture, Wallis' Formula and more from our friends at Harvey Mudd Murderous Maths The books, the extra bits, games, hints, tricks, puzzles... they're all here! Mystery Master Logic Puzzles logic puzzles, with printable solving grids National Library of Virtual Manipulatives for Interactive Mathematics Pre-K to 12th grade virtual manipulatives... Negative Exponent Intuition a quick video with an "Aha!" message (YouTube) nrich free mathematics enrichment resources for pupils of all ages, online resources including discussion forums and mathematics thesaurus... Notes on Prefixes the Système International d'Unités or SI. yotta, zetta, exa, peta... National Security Agency/Central Security Service Kids and Youth Peer into the secret world of cryptology... NUMB3ERS Math Education Program the math used in each episode of NUMB3ERS! Numbers, constants and computation π, e, log2 and other constants, binary splitting, Newton's iteration and other algorithms, counting primes, and more... Octave GNU Octave is a high-level language, primarily intended for numerical computations... π Day a song for your favorite holiday! 
semi-annual periodical promoting mathematics, designated for high school studentsPaper Models of Polyhedra platonic solids, Archimedian solids, uniform polyhedra, compounds, literally hundreds of paper models PHI: The Golden Ratio or Golden Section in Nature, Art, Science and Religion Planarity Game Arrange the vertices such that no edges overlapPlatonic Solids (a.k.a. Dice Shapes) 5 regular solids are also called the 5 Platonic solids... (or try Wikipedia) The Prime Glossary your Internet guide to the terminology of prime numbers Purplemath Algebra Resource, with lessons and self-evaluation Puzzle Parlor interactive GamePuzzlesThe Puzzling World of Polyhedral Dissections Stewart Coffin's book, now on the web Rainforest Maths fun interactive math activities K-6 SAT Math Pro learn math concepts and problem solving strategies, real video solutions, improve your confidence! Science (and Math) Help On-line help with any science or math w/ NASA consultants (Yahoo group) Simpsons Math The Simpsons is one of the most literate TV programs on the air, containing many references to subject matter and scholars! Slide Rule (often nicknamed a "slipstick") is a mechanical analog computer... The Sliding Block Puzzle Page tons of great interactive sliding puzzles!The Sound of pi a concert of huge proportions! Thinking Blocks interactive math tool to help students learn how to solve challenging word problems SolveIt! University of Delaware's Math Enrichment Program by mail Stephen's Guide to the Logical Fallacies Logical fallacies are errors of reasoning, errors which may be recognized and corrected by prudent thinkers. This site indexes and describes all known logical fallacies... Tessellations Lots of them! Tessellation Town create your own tessellations, interactively Totally Tessellated comprehensive introduction to tessellations, with history, math, and of course, Escher! Trachtenberg Speed System of Arithmetic far superior to the current arithmetic taught in schools and it has been found to increase self confidence and concentration... Understanding Statistics flash demos... Unizor rigorous mathematical topics addressed usually by those high school teachers and advanced students who strive to deepen their understanding of principles and concepts of mathematics... ViHart Amazing math and doodle videos that make math concepts simple, fun, and exciting!Virtual Manipulatives pre-k to 12th grade, numbers, algebra, geometry, and more - great interactive fun! Visual Algebra An exploratory of algebra [I and II] through the eye WatchKnow videos to learn from, organized... check the leaderboard, by topic, or search for whatever you need WebSudoku Number puzzle, but no math required... trillions of puzzles! Wolfram | Alpha computational search engine... solves anything mathematical! Wolfram MathWorld The web's most extensive mathematics resource! Women and Mathematics Monthly posters about the life and work of a woman who has made a contribution to the mathematical sciences... Zomepad Modeling Software with models to follow, examine and build a new challenge every month!
Contributed Models great fun to build Math Problems
AGMath Hundreds of Algebra, Geometry, and Puzzle worksheets, plus problem sets and lessons for MathCounts and the American Math Competition (AMC) (requires Adobe Reader) Alcumus Over 7,500 problems with solutions, many from major national math competitions: MATHCOUNTS, MOEMS, theAmerican Mathematics Competitions, and the Centre for Education in Mathematics and Computing competitionsArt of Problem Solving Pre-Algebra Videos ~300 problem solving videos! Aunty Math Math Challenges for K-5 Learners Bedtime Math A nightly math problem to get kids fired up about math in their everyday lives. Questions with each real-life problem for wee ones through late elementary / middle school Columbus State University Problem of the Week 4 levels: Problem of the week, Algebra in Action, Middle School Madness and Elementary Brain Teaser... Figure This! Math Challenges and more Intelligent Child a blog of weekly problems that sharpen the problem solving and critical thinking skills of elementary kids Macalester College Problem of the Week accessible to first-year college students, a mathematics problem to his students every week since 1968!, or subscribe with the words "subscribe macpow" in message body Math Forum Problems of the Week bi-weekly problems in Math, Pre-Algebra, Algebra and Geometry Math Forum Problem of the Week podcast A new problem and it's solution weekly! Download to your iPod or listen on the PC... Nick's Mathematical Puzzles deceptively simple, or elegance of solution, a new mathematical problem each week... Prime Puzzles and Problems Collection An anthology of the most interesting prime problems... Princeton Friends Problem of the Week great problems, at various difficulty levels each week... Project Euler a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems... Purdue University Problem of the Week to stimulate and cultivate interest in good mathematics, especially among younger students, send solutions by snail mail... Super-Impossible Math Questions even a ten year old could understand them, but it would take more than a nuclear scientist to solve them! Also visit Multiplication for links in Multiplication and other arithmetic, and Programming for programming and free compiler links!
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