Activity
American Chemical Society

Energy and Entropy of a Stretched Rubber Band

For Teachers 9th - 12th Standards
Stephen Perry invented and patented the modern rubber band in 1845. Young scientists put his discovery to work as they use rubber bands to observe entropy and enthalpy. They determine the change in free energy to figure out if it...
Lesson Plan
Kenan Fellows

The Newton Challenge

For Teachers 6th - 8th Standards
Make Newton proud. Scholars apply their understanding of forces and energy to an engineering design challenge. They learn about simple machines, create a presentation on Newton's laws, and develop a balloon-powered car.