Williamson Kids Can book. This activity book, written for grades 2 to 9, provides instructions for making 75 contraptions that demonstrate such physical principals as friction , gravity, energy and motion. Readers learn how to make a catapult that sends marshmallows flying and a toy bird that balances on a finger from materials found in around the house and in the garage. The book is organized into chapters for motion and friction, gravity and balance, and torque and energy. Each chapter begins with a brief introduction to the concept and contains directions for building four or five contraptions that illustrate how it works.
Readers then try to improve the spin by adding weights and using a string to add torque.
Each activity become slightly more complex until students are building a rink where their tops appear to defy gravity and designing boomerangs and pie plate Frisbees. Each activity includes additional scientific explanations and examples of real life applications. The book illustrated with black and white cartoon drawings. ENC does NOT distribute this resource.