"A foundational look at pulleys, explaining how these simple machines work and describing some common examples, such as gears and chains, that have been used throughout history"--Provided by publisher.

"A foundational look at wheels and axles, explaining how these simple machines work and describing some common examples, such as doorknobs, that have been used throughout history"--Provided by publisher.

Learn what a levers are, how they work, and how they are useful.

Explains what screws are and what they are used for.

Explains how wheel and axles work together on different types of machinery.

"This book examines the importance, uses, and everyday examples of inclined planes, one of the simple machines."--

"A lever is one of six simple machines that are designed to make different kinds of work easier. Lifting, pulling, pushing--all these tasks are more efficient when you use a simple machine. In Levers Lessen the Load: Simple Machines for Kids, readers learn how levers and fulcrums can help us move far more weight than we can on our own. Need to lift a heavy rock? Use a lever! Need to push a log out of the way? Use a lever! Know where else you can find...

This book introduces early readers to pulleys and how we use them everyday.

This book introduces young readers to screws and how we use them everyday.

"How do you keep a door from closing? Try using a wedge! Wedges are one of the six simple machines that help make work easier by using mechanical advantage. In Wedges Make a Point: Simple Machines for Kids, readers ages 5 to 8 learn how a wedge's shape makes it perfect at stopping something heavy from moving, and separating material to split something--like banana bread--apart. Glossary, photos, and a hands-on activity make this book fundamental for...