Texas A&M University
Texas a & M University: Pythagoras and the Pythagoreans
A biography of Pythagoras, his school, his teachings, and the history of his approach to mathematics. Includes many formulas connected to Pythagoras.
Hanover College
Hanover College: Pythagoras and the Pythagoreans, Fragments and Commentary
This site provides an extensive collection of references to Pythagoras and Pythagoreanism, found in the philosophical writings of Plato, Aristotle, and others.
Stanford University
Stanford Encyclopedia of Philosophy: Pythagoras
Encyclopedia article about Pythagoras from the Stanford Encyclopedia of Philosophy that discusses not only his life, but his major contributions as well. Also includes a lengthy bibliography and links to additional information.
Wikimedia
Wikipedia: Pythagoras
Encyclopedia article about Pythagoras that looks at his life, accomplishments, and his influence on other mathematicians. Includes pictures and links to additional information.
World History Encyclopedia
World History Encyclopedia: Greek Mathematics
Discusses the major cultural influences on the development of mathematics in ancient Greece, and how the Greeks went on to surpass those cultures. The work of the Pythagoreans and of Euclid are described, along with some famous...
CK-12 Foundation
Ck 12: Flex Book: Pythagorean Theorem
[Free Registration/Login may be required to access all resource tools.] Learning module that introduces students to the Pythagorean Theorem. Topics include history, applications, and proofs related to this geometry concept.