Khan Academy (Log-in or scroll down and browse by grade/topic)
Virtual Manipulatives
Math Wire (Math activities in every strand!)
Math is Fun
Area of Plane Shapes (Math is Fun)
More about area of Triangles
Free Math Help
Math Playground
Games
CoolMath
Softschools Math
Cyberchase (Math challenges from the PBS Cybersquad!)
Math Playground Games
Multiplication Focus
www.multiplication.com
Math Quick Quiz
