Eloquent Logic

http://www.eloquentlogic.com/

This web site teaches the fundamental principles of physics (high school level) by using lessons, labs, glossary and a game. Its main topics focus on basic physics phenomena: Vector Kinematics, Dynamics, Work & Energy, Momentum, Equilibrium, Circular Motion and Gravitation. 

Vector Kids

http://vectorkids.com/

This web site was created by Mr. Larson for his children.  It contains interactive flash cards for math facts and states.  Students will enjoy practicing their multiplication facts by playing "VK Math Invaders."

Spin and Spell

http://www.spinandspell.com/game.swf

This web site gives kids a chance to practice spelling a variety of words from categories such as: In and Around the Home, What We Wear, What We Eat, How We Get There, and The Animal Kingdom.  It has sound and is interactive so it's fun for the kids.

Lemonade Stand

http://www.lemonadegame.com/

The person playing the game runs a Lemonade Stand and has to make decisions about what to buy, how much to buy at a time, and what to sell it for.  The game helps reinforce the economic principles of Supply and Demand, Inventory Management, Purchasing, and Making a Profit. 

National Library of Virtual Manipulatives

http://matti.usu.edu/nlvm/nav/vlibrary.html

This Interactive math site is the result of  a three-year NSF grant to Utah State University to develop a library of interactive, virtual manipulatives for mathematics instruction. The emphasis is on K-8, but it does include some high school content. The site is organized by content strand and grade level or you can search for what you need.