(Discover Science and Technology)
By Kerry Cordy
Preschool: Do three requirements including the two starred *
_____ 1 * Understand what the terms force and motion means. Demonstrate them. Examples might be to push someone on a swing, push a toy car across a room, or throwing a ball. Be able to explain how force and motion affect your demonstration. What happens if no force is applied? What happens if uneven force is applied on two sides of an object, such a...