You are able to gift 5 more articles this month. Anyone can access the link you share with no account required. Learn more. PERU — Fourth grade students presented their Simple Machines science fair ...

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.

Find out how simple machines impact your daily life on this Science Trek: The Web Show. In this Science Trek: The Web Show, Host Joan Cartan-Hansen and her guest scientists John Gardner, Boise State ...