National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Proving the Pythagorean Theorem
This Ask Dr. Math site explains how to prove the Pythagorean Theorem. Dr. Math gives three variations for proving the theorem.
Ducksters
Ducksters: Kids Math: Pythagorean Theorem
Understand how the Pythagorean Theorem can help us solve the lengths of a triangle. Learn how it works, terms, tricks, and examples on this site.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: The Distance Formula
Northeast Parallel Architecture Center, Syracuse University, provides a lesson on finding the distance between two points using the coordinates and Pythagorean Theorem.
Other
Mathpages.com: History of Mathematics
Find the information you need about math history, from Archimedes to Fermat. A great resource for studying the foundations of today's world of mathematics.
National Council of Teachers of Mathematics
The Math Forum: Famous Problems in the History of Mathematics
On this site, there are several math problems to explore and solve. Look through some solutions by famous mathematicians and expand your thinking about some interesting math concepts. Teachers of elementary grades may want to use this...
Exploratorium
Exploratorium: Pi Day
Pi Day is celebrated on March 14 in honor of the never-ending value of pi (3.1415926) The renowned museum, Exploratorium, presents a history of Pi and offers links to Pi-related activities.
Ducksters
Ducksters: Physics for Kids: Basic Vector Math
Kids learn about basic vector math in the science of physics. How to add vectors using the head-to-tail method and the Pythagorean theorem. Example problems and the commutative and associative laws.
Cool Math
Coolmath: Precalculus Basic Formulas to Know
This CoolMath resource provides an introduction to some Precalculus formulas.
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