Math Open Reference

http://www.mathopenref.com/index.html

Most of us know that math is better understood when it is visually assisted with manipulatives. Here is a site that explores high school geometry in a very visual format.

"Mission: A free interactive math textbook on the web. Initially covering high-school geometry. Over the past few years, enormous strides have been made in providing computers in educational settings to aid the learning process. This, combined with high speed access to the Internet have opened up many new opportunities in education. This open reference project has the goal of providing high-quality content for these computers free of charge to the end user, and provide numerous benefits over paper textbooks. Find out more.. Using interactive tools and compelling animations, it provides an engaging way to learn and explore the subject. Teachers will have new ways to teach, and the students a new way to learn that is fun and engaging. "