What a machine is, the three ways that machines make work easier and simple and compound machines.
Reviews the definition of simple machine, three ways that machines make work easier, the six types of simple machines, and the definition of compound machine.
Discover how an amazing structure in Florida, called Coral Castle, was built by a single person using only simple machines.
Find out how muscles and bones in the human body work together as simple machines called levers.
Learn the history of the wheel and axle and why it has been called one of the most important inventions of all time.
Discover how screws help us do work and some of the many real-world uses of screws.