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    http://www-groups.dcs.st-and.ac.uk/~history/Curves/Curves.html   » Famous Curves Index   - Curves you've heard of and curves you haven't, from Astroid to the Witch of Agnesi.

    http://home.earthlink.net/~jdc24/symmetry.htm   » The Aesthetics of Symmetry - A brief digression into how people perceive symmetrical patterns -- what makes them boring, interesting, or overly intricate

    http://cgibin.erols.com/ziring/cgi-bin/spiro.pl/spiro.html   » Amazing Spiro - An applet for making spirograph graphs. Includes options for size, color and shape. Allows saving of completed image.

    http://www.jaapsch.net/puzzles/square1.htm   » Back to Square One - Includes description, solutions and other resources on this cube-like puzzle.

    http://cryptarithms.awardspace.us/   » Cryptarithms Online - 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.

    http://www.curiousmath.com/   » CuriousMath - Include news, math tricks, methods, facts, trivia, mostly posted by users.

    http://anduin.eldar.org/~problemi/singmast/material.html   » David Singmaster: List of Available Material - Teaching and recreational items in this personal collection.

    http://finitegeometry.org/sc/16/puzzle/   » The Diamond 16 Puzzle - 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).

    http://www.ericweisstein.com/encyclopedias/books/RecreationalMathematics.html   » Eric's Scientific Book List: Recreational Mathematics - Book list from Eric Weisstein including titles, authors, publishers, prices, page count and some have links to Amazon.com.

    http://www.ucalgary.ca/lib-old/SpecColl/strens.htm   » The Eugène Strens Recreational Mathematics Collection - A special collection at the University of Calgary, including the archives of Martin Gardner. There is a searchable online index.

    http://www.archim.org.uk/eureka/   » Eureka - The annual journal of the Archimedeans, the mathematical society of the University of Cambridge. It regularly contains articles on recreational mathematics.

    http://www.mathpuzzle.com/Fairdice.htm   » Fair Dice - Includes a complete list of all possible Fair Dice, most of which are not cubes. Includes pictures.

    http://famouscurves.awardspace.us/   » Famous Curves - Visual animations of famous curves.

    http://www.cut-the-knot.org/arithmetic/rapid/   » Fast Arithmetic Tips - Three categories: defensive - know to check an answer, offensive - fast mental calculations, and math magic.

    http://milan.milanovic.org/math/   » Fibonacci Numbers and the Pascal Triangle - The relation between Fibonacci numbers and Pascal's triangle. English/German/Serbian.

    http://home.att.net/~numericana/answer/   » Final Answers - Numerous facts including formulas, magic tricks, fallacies, recreations compiled by Dr. Gerald P. Michon.

    http://www.ms.uky.edu/~lee/ma502/gardner5/gardner5.html   » Gardner Index - Rough index to the fifteen books containing Martin Gardner's Mathematical Games articles from Scientific American.

    http://www.york.cuny.edu/~malk/tidbits/tidbit-geometric-packing.html   » Geometric Packing Problems - By Joseph Malkevitch: "Given one shape X how and when can one pack identical copies of this shape into another shape Y?"

    http://www.inwap.com/pdp10/hbaker/hakmem/hakmem.html   » HAKMEM - A collection of problems from MIT. Work reported herein was conducted at the Artificial Intelligence Laboratory, a Massachusetts Institute of Technology research program.

    http://math.arizona.edu/~kerl/doc/square-root.html   » How to Manually Find a Square Root - Provides a method of finding a square root without the use of a calculator.

    http://www.mathpuzzle.com/iamond.htm   » Iamond - A page on polyiamond puzzles. Includes many pages on tessellation.

    http://www.btinternet.com/~se16/js/looknsay.htm   » Look and Say Sequence Generator - Creates a special kind of summation formula created by John Conway.

    http://www.maa.org/BLL/recmath.htm   » MAA Library List in Recreational Mathematics - Book list split into categories. Includes title, author, publisher and date information about each book.

    http://www.math.toronto.edu/007/   » MAT 007 I News - A newsletter edited by undergraduates of the Department of Mathematics at the University of Toronto. Includes some online copies.

    http://mathforum.org/~judyann/2001/   » Math Forum: 2001 Mathematics Game - A contest that asks to write all integers from 1 to 100 using only the digits 2,0,0,1 and arithmetic operations.

    http://mathforum.org/~judyann/2002/   » Math Forum: 2002 Mathematics Game - 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.

    http://mathforum.org/algpow/   » Math Forum: Algebra Problem of the Week - View this week's algebra problem or those of previous weeks.

    http://world.std.com/~reinhold/mathmovies.html   » Math in the Movies - A guide to major motion pictures with scenes of real mathematics.

    http://www.cut-the-knot.org/Curriculum/index.shtml#magic   » Math Magic By Computer - Interactive java puzzles and activities in different mathematical topics.

    http://math.cofc.edu/faculty/kasman/MATHFICT/   » Mathematical Fiction - A list of mathematical fictional movies, books, stories, plays and shows. Split into categories including children's books. Can be sorted by mathematical content and literary quality.

    http://www.math.cl/induction.html   » Mathematical Induction - A page of uncommon problems, most closely connected with number theory.

    http://www.andrewlipson.com/mathlego.htm   » Mathematical Lego Sculptures - Designed and built by Andrew Lipson. Images and LDraw files.

    http://mathres.kevius.com/problem.html   » Mathematical Problems - Problem Solving - Mathematics Hots (Problems) by Bruno Kevius

    http://math.furman.edu/~mwoodard/mqs/mquot.shtml   » Mathematical Quotation Server - A collection of mathematical quotations culled from many sources. You may conduct a keyword search through the quotation database.

    http://www.apt.group.shef.ac.uk/ms.html   » Mathematical Spectrum - Mathematical Spectrum is a magazine for students and teachers of mathematics in universities, colleges and schools worldwide. It may be read by anybody interested in mathematics as a recreation.

    http://finitegeometry.org/sc/ph/aesthetics.html   » A Mathematician's Aesthetics - 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.

    http://www.math.nus.edu.sg/aslaksen/teaching/math-art-arch.shtml   » Mathematics in Art and Architecture - An interdisciplinary course on mathematics in art and architecture.

    http://mathmuse.sci.ibaraki.ac.jp/indexE.html   » Mathematics Museum (Japan) - At Mathematics Museum (Japan) you would be surprised how interesting mathematics is. You will find exhibition rooms produced by Japanese researchers and educators.

    http://www.mathematik.com/   » Mathematik - Individual pages on different topics in Mathematics. Examples : group theory, dynamical systems theory, geometry or number theory.

    http://www.mathematische-basteleien.de/   » Mathematische Basteleien - 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.

    http://home.adelphi.edu/~stemkoski/mathematrix/   » Mathematrix - Have fun with geometric shapes, fractals, math games, art, humor, quotes, and important constants.

    http://www.mathmos.net/   » Mathmos - Includes puzzles, jokes, quotations, poetry, and FAQs.

    http://www.astrolog.org/labyrnth/algrithm.htm   » Maze Classification and Algorithms - A short description of mazes and how to create them. Definition of different mazetypes and their algorithms.

    http://www.math.hmc.edu/funfacts/   » Mudd Math Fun Facts - 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.

    http://www.worldofnumbers.com/ninedig1.htm   » The Nine Digits Page - Puzzles and problems connected with numbers using the digits 1-9.

    http://www.shyamsundergupta.com/   » Number Recreations by Shyam Sunder Gupta - Features interesting facts about different numbers. Includes favorite related links.

    http://gfm.cii.fc.ul.pt/people/jrezende/jr_poliedros-puzzles_en.pdf   » On the Puzzles with Polyhedra and Numbers - This is an article on a set of didactical games edited by the Portuguese Mathematical Society (SPM). [PDF]

    http://www.btinternet.com/~se16/mhi/   » One Metaphor Fits All - Explains Conway's audioactive decay that is generated by a particular kind of sequence. Includes illustrations and related resources.

    http://kahuna.merrimack.edu/~thull/OrigamiMath.html   » Origami Mathematics - Information on the mathematics of paper folding.

    http://www3.sympatico.ca/diharper/   » Recmath - Includes pages on magic squares and polyomino patterns and contains related java applets.

    http://camel.math.ca/Recreation/recreation.html   » Recreational Mathematics - Links collected at CAMEL, the Canadian Mathematical Society website.

    http://www.ics.uci.edu/~eppstein/recmath.html   » Recreational Mathematics (David Eppstein) - An extensive list of web resources for recreational math.

    http://forums.delphiforums.com/recmath/   » Recreational Mathematics Forum - A forum for posting messages about math recreations. Hosted at Delphi.

    http://www.uwgb.edu/dutchs/RECMATH/recmath.htm   » Recreational Mathematics Topics - By Steven Dutch. Symmetry, Crystals, Polyhedra and Tilings; Pythagorean triplets and other things about sums of powers; Geometry Classics.

    http://www.novaroma.org/via_romana/numbers.html   » Roman Numerals - 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.

    http://www.usna.edu/Users/math/wdj/rubik_nts.htm   » Rubik's Cube Lecture Notes - Notes on the mathematics of the Rubik's cube.

    http://www.simonsingh.net/   » SimonSingh.net - 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.

    http://www.worldofescher.com/misc/penrose.html   » Sir Roger Penrose - An article about him and his interests and contributions to recreational mathematics.

    http://www.skytopia.com/project/magnet/magnet.html   » Skytopia - Super Magnet - A colourful world built entirely using mathematical atoms and molecules. Pictures and animations demonstrate structures colliding and interacting. Animated GIF demonstrations.

    http://www.nehuenmultimedia.com.ar/html/spirograph.html   » Spirocharts - A windows application that creates mathematically precise spirograph drawings; savable as images.

    http://www.cut-the-knot.org/arithmetic/rapid/magic.shtml   » Stunning Friends with Math Magic - A collection of card tricks, number guessing games, paper and glue magic, and other math exercises.

    http://www.alpertron.com.ar/CUADRO.HTM   » Table of Numbers Problem - 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).

    http://www.gamepuzzles.com/wade.htm   » Wade Edward Philpott - Profile and description of his mathematical games and puzzles.

    http://carouselnumbers.webs.com   » Which Numbers Produce Carousel Numbers? - High school research project.

    http://www.scottaaronson.com/writings/bignumbers.html   » Who Can Name the Bigger Number? - An essay by Scott Aaronson on the quest for ever-bigger numbers, from exponentials to Busy Beavers.

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