Web Directory

» A Common Book of Pi
   Includes a brief history, a page with different formulas and a list of references.
   http://personal.bgsu.edu/~carother/pi/Pi1.html

» A New Approach to the Universal Constant "pi"
   A text that tries to prove that pi is 3.1416 exactly.
   http://alkyone.com/mak-pi-gr/en/

» A Slice of Pi Home Page
   Features an historic overview of the discovery and estimate methods of pi. formula expressions, and the first 100,000 digits. Some pages use a Geometer's Sketchpad program.
   http://www.geom.uiuc.edu/~huberty/math5337/groupe/welcome.html

» A Tribute to Pi
   Club and information.
   http://www.acc.umu.se/~olletg/pi/trib.htm

» Ancient Pi: Knowers of the Universe
   The concept of pi refers to the constant ratio of the diameter:circumference of any circle; irrespective of the number of degrees contained within that circle. An article in the "Science in Ancient Artwork"-Series by Charles William Johnson.
   http://www.earthmatrix.com/ancient/pi.htm

» Ask Dr. Math - Pi
   Dr Math answers over 60 questions submitted by people about pi including questions on the Bible's relationship to it and its relationship to trigonometry.
   http://mathforum.org/library/drmath/sets/mid_pi.html

» Ask Dr. Math: About Pi
   Explains what the constant is and a brief history. Includes resource links.
   http://mathforum.org/dr.math/faq/faq.pi.html

» Buffon's Needle
   An analysis of its relation to Pi and a simulation by George Reese.
   http://www.mste.uiuc.edu/reese/buffon/buffon.html

» Calculating Pi
   An open source endeavor for the calculation of this constant. Describes the project, the implemented algorithms for calculation and software downloads.
   http://sourceforge.net/projects/projectpi/

» Elias' Pi Page
   Includes Pi in the Binary number system, Pi as a sound file and Pi shown in different images.
   http://www.befria.nu/elias/pi/

» Fun With Pi
   A Topica email list. Archives readable by anyone.
   http://lists.topica.com/lists/funwithpi@igc.topica.com/

» History and Philosophy of Pi
   Probably no symbol of infinity in mathematics has evoked as much mystery, romanticism, misconception and human interest as the number and Greek letter of Pi. Interesting facts and trivia about Pi.
   http://briantaylor.com/Pi.htm

» How Stuff Works: Pi
   Animated graphic helps to explain Pi and the different ways of calculating Pi, with some related links.
   http://www.howstuffworks.com/pi.htm

» Indiana Pi Bill
   Bill proposing new value of pi.
   http://tafkac.org/legal/indiana_pi_bill.html

» Lucy Scale Developments
   Pitch, Pi, and other musical paradoxes.
   http://www.harmonics.com/lucy/ltindex.html

» Pi 3.1416
   Mathematics as the language of nature.
   http://www.freewebs.com/pi3point1416/

» Pi Approximation Day
   22/7 - that is, July 22. For the past few years, people at Chalmers University have celebrated it.
   http://www.rebas.se/humor/piapprox.shtml

» Pi Land
   Fun activities, a Pi trivia game and a Trainer for digit memorization. Pi poetry, artwork, and photography, calculations, digits and book reviews.
   http://www.eveandersson.com/pi/

» Pi Memorama
   Includes a program that teaches Pi for the Mac, a page on why people learn to recite Pi and pages on how to memorise Pi.
   http://www.ac.wwu.edu/~mnaylor/pi.html

» Pi Patterns
   Images and illustrations created by using the digits of the circle constant.
   http://www.antigravitypress.com/Math/pi/

» Pi Through the Ages
   History.
   http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Pi_through_the_ages.html

» Pi World Ranking List
   Every sport has its championship. Every sport has its world ranking list. For many who like to memorize numbers, PI is the ultimate number, and it makes sense to create a list for people to get in touch and learn where they stand in the world of memorizer
   http://www.pi-world-ranking-list.com/

» Pi, Pi, Mathematical Pi
   Parody of the song "Bye Bye Miss American Pie" elaborating on the history of pi.
   http://www.vvc.edu/ph/TonerS/mathpi.html

» Pi-Dye : Pi and Math T-Shirts and Gifts
   Pi and math gifts, t-shirts, clocks, and mugs. Includes some pi news.
   http://www.pidye.com/thestorezone/index.php

» The Constant Pi
   History, formulae, algorithms, programs, records of computation, and references.
   http://numbers.computation.free.fr/Constants/Pi/pi.html

» The Joy of Pi
   Book, digits, links, facts, and quote.
   http://www.joyofpi.com/

» The Magic Piworld
   Provides generated pictures and personal signs out of digits of Pi. Also a Picture Gallery, PiSign, PiPhonie.
   http://www.piworld.de/piworld/mpw_home.htm

» The Pi Pages
   Information on Pi, its history, its future, and the people involved in its calculations.
   http://oldweb.cecm.sfu.ca/pi/pi.html

» The Pi Song
   Written by Joel Gilmore. (Sung to the tune of Supercalifragilisticexpialidocious.)
   http://www.physics.uq.edu.au/people/gilmore/humour/the-pi-song/

» The Pi Trivia Game
   History, math, and physics questions.
   http://www.eveandersson.com/trivia/

» The Ridiculously Enhanced Pi Page
   Information on links for Pi Day.
   http://www.exploratorium.edu/pi/

» Your Piece of the Pi
   This site describes pi's history, characteristics, and application. It also includes a distributed computing application for finding a large number of digits.
   http://library.thinkquest.org/C0110195