The document discusses different types of simple machines including wedges, wheels and axles, levers, inclined planes, screws, and compound machines. It provides examples of each machine and where they can be found, such as doorstops, knives, and bikes using wedges; bikes and cars using wheels and axles; screwdrivers and brooms using levers; stairs using inclined planes; jars and screws using screws; and bikes and garden hoes as examples of compound machines that use multiple simple machines.