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. www.mathematische-basteleien.de
A method of disproving the Theorem of Pythagoras is presented. The author is adamant that this is intended only as a puzzle to find the mistake in the arguments, and not as a serious proposal. www.geocities.com/../System/8956/problems/pyth.htm
At Mathematics Museum (Japan) you would be surprised how interesting mathematics is. You will find exhibition rooms produced by Japanese researchers and educators. mathmuse.sci.ibaraki.ac.jp/indexE.html
Devoted to exploring the more entertaining (and generally lesser known) areas of mathematics. Can be enjoyed by anyone, from individuals with little or no math background to professors of the subject. www.geocities.com/CapeCanaveral/Hangar/7773/index.html
The annual journal of the Archimedeans, the mathematical society of the University of Cambridge. It regularly contains articles on recreational mathematics. www.cam.ac.uk/CambUniv/Societies/archim/eureka
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). www.alpertron.com.ar/CUADRO.HTM
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. www.shef.ac.uk/uni/companies/apt/ms.html
Contains 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. www.novaroma.org/via_romana/numbers.html
A brief digression into how people perceive symmetrical patterns -- what makes them boring, interesting, or overly intricate home.earthlink.net/~jdc24/symmetry.htm
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. math.cofc.edu/faculty/kasman/MATHFICT/Default.html
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. www.math.hmc.edu/funfacts
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