» Encarta: Pythagoras    Encyclopedia article provides an introduction to the Greek philosopher and mathematician.    http://encarta.msn.com/encyclopedia_761563435/Pythagoras.html

» Pythagoras    Student-written biography focuses on his most significant achievements.    http://library.thinkquest.org/4116/History/pythagor.htm

» Pythagoras of Samos    Detailed biography, including pictures, from the MacTutor History of Mathematics archive.    http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Pythagoras.html

» The Proof: Pythagorean Puzzle    A fun look at the man and one of his best-known equations. Includes Shockwave demonstration. From Nova Online.    http://www.pbs.org/wgbh/nova/proof/puzzle/

» The Theorem of Pythagoras    Brief description and proof of the Pythagorean theorem.    http://www-spof.gsfc.nasa.gov/stargaze/Spyth.htm