Hauling a Pumpkin: Wheels and Axles vs. Lever
Hauling a Pumpkin: Wheels and Axles vs. Lever
From the Series First Step Nonfiction — Simple Machines to the Rescue
Which works better to haul a pumpkin—a lever or wheels and axles? Readers will see how a group of kids compares two simple machines and decides which one does a better job at moving the… Read More →