simple machines

"[Readers] will learn how screws work, where they're found, and their uses throughout history"--Publisher.

"Instructions for creating items using scientific methods"--Provided by publisher.

Text and illustrations provide young readers with information about seesaws, nutcrackers, and brooms--three simple machines that are really just different types of levers.

Explains scientific concepts related to wheels, covering such topics as friction, bearings, and wheel size, and presents hands-on activities.

Explains scientific concepts related to wedges, discussing different jobs that wedges do, and presents hands-on activities.

Explains scientific concepts related to screws, discussing different jobs that screws do, and presents hands-on activities.

Explains scientific concepts related to levers, covering such topics as force arm and weight arm, and presents hands-on activities.

Explores the various simple machines used at an amusement park, including the wheel, lift and wedge, flip and twist, and more.

"Learn about mechanics as you build a vending machine like ancient Greek engineer Hero of Alexandria did, or a tentacle prosthetic arm like industrial design student Kaylene Kau, and more"--Provided by publisher.

Introduces readers to simple machines through simple text, photographs, and matching activities.