The Franklin Institute
Spotlighting Simple Machines
Simple machines such as inclined planes in wedges and screws are explained.
Utah Education Network
Uen: Force, Energy, and Motion: Complex Machines for Simple Tasks!
Designed for Grade Eight, this collection of lessons provides information, examples and quizzes related to simple machines. Elementary students studying this topic will find this site informative as well.
TryEngineering
Try Engineering: Here Comes the Sun
Young scholars work in teams to learn about solar panel design, simple circuits, and how solar energy is used to provide power to simple machines such as calculators.