Levers /
Andrea Rivera.
- 24 pages : color illustrations ; 21 cm.
- Zoom in on simple machines .
Includes bibliographical references (p. 23) and index.
Science -- Technology -- Engineering -- Art -- Math -- Key stats.
"From wheelbarrows to baseball bats, levers are at work all over in our world today. Learn all about them in five easy-to-read chapters. Vibrant, full-color photos, bolded glossary words, and a key stats section let readers zoom in even deeper. Aligned to Common Core Standards and correlated to state standards." -- Publisher's website.