- 2002 Olympic Education
Educational activities designed to take advantage of the excitement and momentum of the Olympic and Paralympic Games in Utah. Look for math lessons in the Curriculum and Sports sections, and data for generating lessons in the Continents, Countries, Venues,
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- 2002 Ties: School Teacher Ties - Jerry Slatkin
Teacher themed neckties, including generic teacher ties and some applicable to mathematics teachers (geometry, especially).
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- 82 Games - Roland Beech
In-depth statistical coverage and analysis of the National Basketball Association (NBA). The site analyzes team-wide or player-specific shot selection and shot clock usage, production by position, player pairings, foul drawing, turnovers, and clutch play
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- 8 is Great: Math Games
Addition, multiplication, and division practice at the elementary level. Tips and tricks offered for 9 and 11 times tables, factoring a quadratic expression, and generating the Fibonacci sequence. Also includes a sudoku puzzle.
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- Acertijolandia - Jose Manuel Galvan Pachon
Math problems, riddles, and brain teasers for all ages. In Spanish.
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- alt.math.recreational - Math Forum
An unmoderated newgroup focused on recreational mathematics. Read and search archived messages; and register to post to the discussions.
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- Art Silverman Sculpture - Art Silverman
An artist who bases his work on mathematical concepts. Includes a gallery and several essays about his works.
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- bit-player - Brian Hayes
In Hayes' weblog, the author of the American Scientist Computing Science column elaborates on those articles, posts errata, records notes from conferences in progress, and explores other topics. The blog dates back to January, 2006, and includes articles
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- Calculator v1.0 - Harold Thimbleby, Tri-Bar Software
A freeware Macintosh calculator which balances equations for you as you type them in. Its functions include the usual four arithmetic functions, as well as exponentiation, trigonometry, logarithms, and factorial. Many functions have options that support
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- Can You Crack the Enigma Code? - Richard Belfield
The official website accompanying Belfield's book, Can You Crack the Enigma Code? "As part of the book, Richard invited a team of experts from the Information Security Group at Royal Holloway, University of London, to create a challenging collection of
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- Card Games - John McLeod
Rules and information, including probabilities, about card and tile games. Indices by alphabetical order, classified by mechanism and by objective (including a list of children's games), arranged by country and the types of cards. Also, commercial, solitaire,
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- Clickmazes - Gilbert, Mitchell
An extensive collection of interactive puzzles and mazes organized in the following categories: Maze gallery; Attic gallery; Maze of Life; HexaRoll; Oskar's four-bit mazes; 2D tilt mazes; Colour-zone mazes; 3D tilt mazes; Tilt puzzles; NEWS and RULES;
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- Clutch Hitting - Elan Fuld
Download the PDF of a study examining whether clutch (or choke) hitters exist in professional baseball. Using play-by-play data, Fuld found substantial evidence that clutch hitters exist in Major League Baseball, when sacrifice flies are considered as
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- Comptometer - Biography of a Machine - Brooke W. Boering
A site on the early development of the business calculator around the turn of the twentieth century in America. Learn about the various models of comptometers, their features, and how to identify them; Dorr Eugene Felt, their inventor, and the company
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- Conceptual Mathematics - Karl F. Kuhn
Lesson outlines for teachers, math challenges, and philosophical discussions on how math helps us understand sports, fair taxation, gender difference, and more. The author's musings on mathematics as a game cover Pascal's Triangle, primes, the golden
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- Count On - Department for Education and Employment, UK
Activities and resources -- some simple and some fancy -- for parents, teachers, and students. Resources offers, among other things, guides: to mathematical misconceptions; for parents helping with homework; for promoters of math fairs; and for providers
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- Creative Geometry - Cathleen V. Sanders
Teachers and students will find creative and interesting "hands-on" projects for most topics in the geometry curriculum. Each project is designed to help students understand, remember, and find value in the concepts of geometry. The pages are organized
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- Database of Number Correlations - James Barton
Partitionings, prime factorizations, polygonal numbers, and other data about each of the numbers one through one thousand, as well as connections to "various material and occult phenomena." See also Barton's magic square that has interesting prime factor
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- David Bailey's World of Tessellations - David Bailey
Some high quality tessellations of a "representational" nature, as exemplified by M.C. Escher. Includes notes on the designs themselves, the design process, the history of tessellations, and references.
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- De Viribus Quantitatis - The University of Bologna
Luca Pacioli, a Franciscan monk, mathematics tutor, and colleague of Leonardo Da Vinci, wrote this foundational text of modern magic and numerical puzzles between 1496 and 1508. De Viribus Quantitatis (On the Powers of Numbers) contains the first ever
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- Drawing a Crop Circle - IES Ramon Cabanillas (Cambados, Pontevedra, Spain)
To draw a crop circle, the high school students at IES Ramon Cabanillas (Cambados, Pontevedra, Spain) calculated ellipses and discovered the pentagram's relation to the golden mean. This website details their designs, practice, calculations, and final
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- Enigmalia. El país de los enigmas
In Spanish or Catalan: Web donde podrás resolver cada semana un nuevo problema matemático/lógico. Estos problemas versarán sobre los enigmalianos, habitantes de un país donde el motor que todo lo mueve es la curiosidad por los enigmas. La publicación
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- Fermat's Last Theorem Poetry Challenge - Jeremy Teitelbaum
The proof of Fermat's last theorem by Andrew Wiles and Richard Taylor was presented to an audience of over 300 people during a ten-day conference at Boston University in August, 1995. At that conference, Jeremy Teitelbaum issued a poetry challenge asking
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- FIRST LEGO League - FIRST (For Inspiration and Recognition of Science and Technology)
The "little league" of the FIRST Robotics Competition, the FIRST LEGO League provides children aged 9 through 14 opportunities for hands-on experimentation in a real-world context. With the help of LEGO MINDSTORMS Robotics Invention System technology,
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- Flexagon - Magnus Enarsson
"A flexagon is a polygon folded from paper with a very remarkable quality: you can turn it inside out to make it reveal hidden surfaces." History, including the original discovery of the tri-hexaflexagon by Arthur H. Stone, as he folded strips of paper
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- Flexagons - Conrad, Hartline
Introduction: The story of the Flexagon; Building and Operating the Flexagon; The Covering Space Representation of Flexagon Operation.
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- "F.O.I.L.: Keepin' Algebra Fresh" T-Shirt - Shamplade.com
Need some help with the distributive property? This is a great T-shirt that demonstrates FOIL in a "hip" way. Purchase with PayPal.
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- Folding and Unfolding - Eric Demaine
A series of pages detailing research and findings in origami, including: fold and cut, folding silhouettes and wrapping polyhedra, map folding, unfolding polyhedra, folding polygons into polytopes, linkages, protein folding, hinged dissections, hyperbolic
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- Football World Cup Simulation - Alan Parr, NRICH Maths
A dice game for students, simulating World Cup football (U.S.: soccer) play results, with varying degrees of complexity.
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- Fractal Landscapes - Adam Brown
Results from the author's fractal landscape generation rendering computer program. Galleries, with an introduction to the ideas behind fractal landscape generation, and links to other fractal sites on the Internet.
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- The Fractal Murders - Mark Cohen
A witty mystery that follows private eye Pepper Keane as he seeks to learn what connects the seemingly unrelated deaths of three math professors -- all specialists in fractal geometry. Originally published by Muddy Gap Press, and re-released by Mysterious
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- The Free Fall Research Page - Green Harbor Publications
Accounts of people who "have survived a fall of thousands of feet without a working parachute." In particular, learn facts about "falling math" -- how to calculate terminal velocity -- and download the Free Fall Research Page Speed Conversion Table, which
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- Friedman Numbers - Erich Friedman
A Friedman number is a number that can be written in some non-trivial way using its digits, the operations + - * / ^ and concatenation of digits. For example, 25 and 126 are Friedman numbers, since 25 = 5^2, and 126 = 6 * 21. Page includes a list of all
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- Fritz Dooley's Mancala Center - Fritz Dooley
Game theory analysis of the board game Mancala, written as a research paper for Harvard Business School.
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- GalaxyGoo
An interdisciplinary, volunteer thinktank dedicated to exploring expressions of science and math with online technologies, for public benefit. Read interviews of scientists; explore math such as the sine curve with Flash, participate in forums and blogs,
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- Giant Fractal Pecan Pie
The creators of this tutorial explain that they wanted to figure out how to design a large pie that still strikes a balance between the filling (area) and the crust (perimeter). View the steps they took to construct a very enormous pecan pie in the shape
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- Googol Learning - Susan Jarema
"It wasn't until I began teaching my own children math and had to relearn it that I began to see its beauty...." From the family publishers of the Discovery Multiplication Program, music such as "Multiplication Vacation," and other educational DVDs, games,
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- Grand Illusions - Hendrik Ball
A "site for the enquiring mind, with optical illusions, scientific toys, visual effects, and even a little magic." Includes a number of feature articles on vision, photography, mirrors, optical toys, movies, etc. See, in particular, the geometrical optical
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- Greg Egan's Home Page
Information, illustrations, and Java applets that supplement some of the works of the science fiction author. The Applets Gallery includes groups of rotations in three dimensions and in four dimensions; Escher, inspired by the artist's conflicting orientation
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- The Grothendieck Biography Project - Ferment Magazine
The on-going translation of Alexandre Grothendieck's Récoltes et Semailles into English.
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- The Hadamard Maximal Determinant Problem - Will Orrick, Bruce Solomon
The site lists the largest known determinants of {-1,1} matrices. It also has links to other online
sources of large determinant matrices and references to the literature.
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- helaman ferguson sculpture - Helaman Ferguson
A mathematician sculptor whose stone and bronze artworks include "Aperiodic Penrose," the Coons Siggraph award, "Esker Trefoil Torus," "Fibonacci Fountain," "Fibonacci Tetrahedron," "Figureeight Knot," "Eine Kleine Link Musik," "Torus with Cross-Cap,"
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- Honors Seminar in Cryptography - Jeremy Teitelbaum
Use a frequency count to solve a cryptogram online, or investigate course materials from an undergraduate course in cryptography. The site also includes some brief papers and book reviews on cryptography, and C source code for a Morse code translator.
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- Impossible World - Vlad Alexeev
About impossible figures in art. These figures can be painted on paper but cannot be represented in space. There are many artworks by M.C. Escher, Jos de Mey, Sandro del Prete and many other artists. Also, you can view animations and read articles about
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- International Slide Rule Museum - Mike Konshak
Scans and pictures of over 1000 unique actual slide rules. Search the gallery, or browse it by manufacturer. Also, learn how to use a slide rule, and determine its date. With terms, encyclopedia, manuals, a graphical table of slide rule scales, and more.
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- International Snow Sculpture Championships: Team Minnesota - Department of Mathematics and Computer Science, Macalester College
Team Minnesota's Enneper surface entry earned second place in the Breckenridge International Snow Sculpture Championships of 2000. The site also includes photos of their planning, design, and implementation stages, the acceptance speech, and the team's
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- International String Figure Association (ISFA)
The ISFA site introduces "String figures" (designs formed from nothing more than a loop of string), with instructions on how to become a member of ISFA and information on e-mail discussion groups and international gatherings, and links to related sites.
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- Internet Problem Solving Contest - Faculty of Mathematics, Physics and Informatics, Comenius University, Slovak Republic
The Internet Problem Solving Contest (IPSC) is a computer programming contest for teams consisting of up to three people. Teams participate via the Internet. Each problem consists of a problem description and two input data sets. Questions tend towards
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- Intriguing Tessellations - Marjorie Rice
Famous for discovering four hitherto unknown tilings of pentagons, Marjorie Rice got her start in tessellations reading an article by Martin Gardner. This site features mathematical explanations and examples of several tessellations using pentagons, as
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- Isabel's Math Blog - Isabel Catherine Lugo
A log of "interesting mathematics-related things" found on the web. The author studies mathematics at MIT, and since April of 2004 has used the blog to "... talk about interesting mathematics I come up with myself -- mostly toy problems, but I might even
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