Bonneville
The Great Marble Drop
Mike and Kellie, a team of electrical engineers, demonstrate how to to design a contraption that accurately drops a marble onto a target. The materials needed and general instructions are provided on the website or via a downloadable...
Steve Spangler Science
Magic Rollback Can - Sick Science! #051
Have your class explore potential and kinetic energy or conservation of energy. They can make a device called a rollback can. Like magic, the can returns to where it started after it has been pushed away.