This document summarizes 5 simple machines: the inclined plane, lever, pulley, screw, and wedge. It provides examples of how each machine is used in the real world, such as using a ramp as an inclined plane, a seesaw as a lever, and a doorstop as a wedge. The document also explains key features of each machine, such as a fulcrum for a lever and how a screw uses an inclined plane wrapped around a cylinder.