Magic of Physics
Moving Toy Mechanisms
Who says playing around in class is a bad idea? Precocious physicists engage in building mechanisms that include cams, gears, pulleys, and levers using an interactive lesson. After completing toy tutorials about each topic, users build a...
CK-12 Foundation
See Saw
Can a mother who weighs five times more than her child really be held in the air on a see saw by the child? A simple simulation demonstrates how this is possible through altering the distance from the fulcrum. Scholars can adjust the...