This document discusses 6 simple machines: the inclined plane, wedge, screw, lever, pulley, and wheel and axle. It provides examples of how each machine helps move or lift objects, including using stairs to go to a lower place, a knife to slice cheese in half, a jar lid to hold things in place, and a crowbar to open things. A compound machine like a lawn mower is also mentioned as using a wheel to help move objects to different places.