Hauling a Pumpkin
ebook ∣ Wheels and Axles vs. Lever · First Step Nonfiction — Simple Machines to the Rescue
By Mari Schuh
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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 pumpkin. This book supports engineering design standards for primary grades in the Next Generation Science Standards.