Learn about how a screw works! Beginner readers and budding young scientists will love learning about using simple machines in everyday situations. Along the way, readers will be supported by expertly leveled text, a strong text-photo match and appropriate text load. Readers will be excited to dig in and learn all about simple machines and basic physics concepts.

Includes Critical thinking questions.

Help with work -- Parts -- Everyday tools -- Glossary -- Read more -- Internet sites -- Critical thinking questions -- Index.