gearing

Simple text and photographs explain the basic science behind wheels and gears.

Did you know that wheels and axles help move things far and fast? They can also make it easier for people to turn things. Learn how wheels have changed the world and more in this book.

Photographs and simple text describe gears and how they work.

This accessible book helps readers relate wheels and axles to the technology in their daily lives through cool real-world examples.

Presents a story-in-rhyme which looks at how gears connect and help machines move.

Photographs and simple text in both English and Spanish describe gears and how they work.

Looks at many different kinds of wheels and discusses how they are used.

Explains the science of how pulleys and gears work, discussing real-life examples such as cranes, drive belts, drills, and mountain bikes, and includes activities that illustrate the principles covered.