Find out more about the inclined plane, the pulley and the screw. Find out more about three of the six simple machines: the inclined plane, the pulley and the screw. These simple machines make work ...

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.

From catapults to caterpillar tractors, machines throughout the ages have served man and lightened the workload. Fourth-graders at Hudsonville's Park Elementary School learned just how simple machines ...

After learning about the lever, wheel and axle, pulley, inclined plane, wedge and screw, the students designed a future Hilltop playground, one that included examples of each simple machine studied.

Where: Walking Mountains Science Center, Avon. When: Saturday, Oct. 7, 2-4 p.m. Cost: $10. More information: This is not a drop-off program; guardian participation is ...