# Topic 6: Energy, Motion and Forces–Simple Machines

Simple machines are a part of learning about forces and energy motion. There are six different types of simple machines and we will learn what they are: the lever, inclined plane, wedge, screw, wheel and axel, and pulley. I will start by showing pictures of each simple machine and an example of each (i.e., a lever example would be a seesaw). Simple machines have few or no moving parts. They all use energy to work, which is the point of the activity. The students will learn how these simple machines help make work easier. After the introduction I will show the students the experiments in which they will complete them and determine whether each uses a push or pull and how they make work easier.

Forces cause change in the speed or direction of the motion of an object; the greater the force, the greater the change in speed or direction. A simple machine is defined as a machine that makes work easier by allowing a person to push or pull objects over increased distances. There are few to no moving parts in a simple machine. Work is defines as applying a force over a distance in the same direction as the force.