Simple Machines at the Amusement ParkPaperback, 1 August 2019

It's time to go to the amusement park! Giant rides loom around you, and countless parts are in motion. But many simple machines are at work too. See the Ferris wheel? That's a wheel and axle. Try your luck at skee-ball. You're using an inclined plane. Find out more about the simple machines behind the excitement.