When you push or pull with a simple machine, you are applying a force and doing work. And, if you get more force out of a machine than you put into it, then that machine has a mechanical advantage.

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. Gallatin Gateway School fourth grade students are hosting a Simple Machine Science Fair today ...

Find out more about the wheel and axel, the lever, and the wedge. Find out more about three of the six simple machines: the wheel and axel, the wedge, the lever. Simple machines like these help us do ...