GeoGebra

GeoGebra

Free mathematics software for learning and teaching.

• Interactive graphics, algebra and spreadsheet
• From elementary school to university level
• Free learning materials

Click here for a Quick Start Guide

Shmoop- now has Pre-Algebra Resources

CHECK this out!!  Shmoop is a great resource for teachers and now is adding math!

GREAT resource for lessons Algebra and Geometry Lesson!

It lives: algebra.mrmeyer.com, several gigabytes of math slides and resources, sorted by week, flavored in Keynote, PowerPoint, and PDF, and now with "Download All" capability for your convenience.

See also: geometry.mrmeyer.com.