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  • Famous Curves Index Zapisz - Curves you've heard of and curves you haven't, from Astroid to the Witch of Agnesi.
  • A Mathematician's Aesthetics Zapisz - In his classic A Mathematician's Apology, G. H. Hardy likened mathematics to poetry and painting. This site elaborates on Hardy's remark with quotations from Stevens, Klee, Fry, and Focillon. Links to related sites are given.
  • Amazing Spiro Zapisz - An applet for making spirograph graphs. Includes options for size, color and shape. Allows saving of completed image.
  • Back to Square One Zapisz - Includes description, solutions and other resources on this cube-like puzzle.
  • Cryptarithms Online Zapisz - A large collection of cryptarithms and alphametics, including cryptarithms from the journal Sphinx, a Primer on Cryptarithmetic, books, and links to other collections of alphametics on the Web.
  • CuriousMath Zapisz - Include news, math tricks, methods, facts, trivia, mostly posted by users.
  • David Singmaster: List of Available Material Zapisz - Teaching and recreational items in this personal collection.
  • Eric's Scientific Book List: Recreational Mathematics Zapisz - Book list from Eric Weisstein including titles, authors, publishers, prices, page count and some have links to Amazon.com.
  • Fair Dice Zapisz - Includes a complete list of all possible Fair Dice, most of which are not cubes. Includes pictures.
  • Famous Curves Zapisz - Visual animations of famous curves.
  • Fast Arithmetic Tips Zapisz - Three categories: defensive - know to check an answer, offensive - fast mental calculations, and math magic.
  • Fibonacci Numbers and the Pascal Triangle Zapisz - The relation between Fibonacci numbers and Pascal's triangle. English/German/Serbian.
  • Final Answers Zapisz - Numerous facts including formulas, magic tricks, fallacies and recreations compiled by Dr. Gerard P. Michon.
  • Gardner Index Zapisz - Rough index to the fifteen books containing Martin Gardner's Mathematical Games articles from Scientific American.
  • Geometric Packing Problems Zapisz - By Joseph Malkevitch: "Given one shape X how and when can one pack identical copies of this shape into another shape Y?"
  • HAKMEM Zapisz - A collection of problems from MIT. Work reported herein was conducted at the Artificial Intelligence Laboratory, a Massachusetts Institute of Technology research program.
  • How to Manually Find a Square Root Zapisz - Provides a method of finding a square root without the use of a calculator.
  • Iamond Zapisz - A page on polyiamond puzzles. Includes many pages on tessellation.
  • Look and Say Sequence Generator Zapisz - Creates a special kind of summation formula created by John Conway.
  • MAA Library List in Recreational Mathematics Zapisz - Book list split into categories. Includes title, author, publisher and date information about each book.
  • MAT 007 I News Zapisz - A newsletter edited by undergraduates of the Department of Mathematics at the University of Toronto. Includes some online copies.
  • Math Forum: 2001 Mathematics Game Zapisz - A contest that asks to write all integers from 1 to 100 using only the digits 2,0,0,1 and arithmetic operations.
  • Math Forum: 2002 Mathematics Game Zapisz - A contest where the contestants have to write all integers from 1 to 100 using only the digits 2,0,0,2 and arithmetic operations.
  • Math Forum: Algebra Problem of the Week Zapisz - View this week's algebra problem or those of previous weeks.
  • Math Magic By Computer Zapisz - Interactive java puzzles and activities in different mathematical topics.
  • Math in the Movies Zapisz - A guide to major motion pictures with scenes of real mathematics.
  • Mathematical Induction Zapisz - A page of uncommon problems, most closely connected with number theory.
  • Mathematical Lego Sculptures Zapisz - Designed and built by Andrew Lipson. Images and LDraw files.
  • Mathematical Problems - Problem Solving Zapisz - Mathematics Hots (Problems) by Bruno Kevius
  • Mathematics Museum (Japan) Zapisz - At Mathematics Museum (Japan) you would be surprised how interesting mathematics is. You will find exhibition rooms produced by Japanese researchers and educators.
  • Mathematics in Art and Architecture Zapisz - An interdisciplinary course on mathematics in art and architecture.
  • Mathematik Zapisz - Individual pages on different topics in Mathematics. Examples : group theory, dynamical systems theory, geometry or number theory.
  • Mathematische Basteleien Zapisz - Topics include Flexagon, Soma Cube, Pentominos, Cube-it, Rubik's Cube, Froebel's Star, Tangram, House of Santa Claus, Chronogram, Numeric Palindromes, Latticework of Letters. English/German.
  • Mathematrix Zapisz - Have fun with geometric shapes, fractals, math games, art, humor, quotes, and important constants.
  • Mathmos Zapisz - Includes puzzles, jokes, quotations, poetry, and FAQs.
  • Maze Classification and Algorithms Zapisz - A short description of mazes and how to create them. Definition of different mazetypes and their algorithms.
  • Mudd Math Fun Facts Zapisz - An archive of interesting math facts for use in the classroom or just for fun. Browse by subject, difficulty, keywords, or try the "random" feature. Based at Harvey Mudd College.
  • Number Recreations by Shyam Sunder Gupta Zapisz - Features interesting facts about different numbers. Includes favorite related links.
  • On the Puzzles with Polyhedra and Numbers Zapisz - This is an article on a set of didactical games edited by the Portuguese Mathematical Society (SPM). [PDF]
  • One Metaphor Fits All Zapisz - Explains Conway's audioactive decay that is generated by a particular kind of sequence. Includes illustrations and related resources.
  • Pretty Wild Narcissistic Numbers Zapisz - Dr Colin Rose provides some examples of numbers that are representable by mathematically manipulating the digits of the numbers themselves.
  • Recmath Zapisz - Includes pages on magic squares and polyomino patterns and contains related java applets.
  • Recreational Mathematics (David Eppstein) Zapisz - An extensive list of web resources for recreational math.
  • Recreational Mathematics Forum Zapisz - A forum for posting messages about math recreations. Hosted at Delphi.
  • Recreational Mathematics Topics Zapisz - By Steven Dutch. Symmetry, Crystals, Polyhedra and Tilings; Pythagorean triplets and other things about sums of powers; Geometry Classics.
  • Roman Numerals Zapisz - Includes a introduction to Roman numerals including a translation of the digits used and a converter which can convert decimal to Roman numerals and vice versa.
  • Rubik's Cube Lecture Notes Zapisz - Notes on the mathematics of the Rubik's cube.
  • SimonSingh.net Zapisz - Home of Simon Singh: author, journalist and TV producer, specialising in science and mathematics. Cryptography is one of his specialties, and his site has a lot of educational and fun content about codes and codebreaking.
  • Sir Roger Penrose Zapisz - An article about him and his interests and contributions to recreational mathematics.
  • Skytopia - Super Magnet Zapisz - A colourful world built entirely using mathematical atoms and molecules. Pictures and animations demonstrate structures colliding and interacting. Animated GIF demonstrations.
  • Spirocharts Zapisz - A windows application that creates mathematically precise spirograph drawings; savable as images.
  • Stunning Friends with Math Magic Zapisz - A collection of card tricks, number guessing games, paper and glue magic, and other math exercises.
  • Table of Numbers Problem Zapisz - Given a m * n rectangle, place all numbers from 1 to mn that minimizes the sum of the products of rows and columns (both in Spanish and English).
  • The Aesthetics of Symmetry Zapisz - A brief digression into how people perceive symmetrical patterns -- what makes them boring, interesting, or overly intricate
  • The Diamond 16 Puzzle Zapisz - New version of the classic puzzle using row/column/quadrant permutations to display symmetries of graphic designs. Has link to a site on the underlying mathematics (Diamond Theory).
  • The Eugène Strens Recreational Mathematics Collection Zapisz - A special collection at the University of Calgary, including the archives of Martin Gardner. There is a searchable online index.
  • The Nine Digits Page Zapisz - Puzzles and problems connected with numbers using the digits 1-9.
  • The Sound of Mathematics Zapisz - Algorithmic music determined by mathematics and by the musical preferences of a human. General MIDI files.
  • Wade Edward Philpott Zapisz - Profile and description of his mathematical games and puzzles.
  • Which Numbers Produce Carousel Numbers? Zapisz - High school research project.
  • Who Can Name the Bigger Number? Zapisz - An essay by Scott Aaronson on the quest for ever-bigger numbers, from exponentials to Busy Beavers.