AR Book Level
5.4
AR Points
0.5
Word Count
1,726
Interest Level
Middle Grades (MG 4-8)
Genre
Nonfiction
AR Quiz #
309018 EN
About this book
An invention can be as simple as a safety pin or as complex as a computer. Inventions help make our lives faster, safer, easier or even more fun! Read all about some amazing inventions and learn the rules of science that make them work.