Put Wheels and Axles to the Test

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Put Wheels and Axles to the Test

From the Series Searchlight Books ™ — How Do Simple Machines Work?

What do bicycles, doorknobs, and screwdrivers have in common? All of them use wheels and axles to perform work! Wheels and axles are simple machines. They help us to do jobs more easily. But… Read More →

  • Lexile: 520
  • Dewey: 621.8078