Includes index.

Ready to work -- On a roll -- Going up -- Cut it out.

From levers to pulleys, simple machines make our lives easier. They help roll, lift, cut, tip, and turn everyday objects. In Simple Machines readers will dig into the science behind how we use simple machines to get the job done. Features include critical-thinking questions throughout the text; a simple, hands-on experiment; a glossary and more. Aligned to the Next Generation Science Standards.