Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
9.2
Points
3.0
Fiction/Nonfiction
Nonfiction
Word Count
15520
Points per Word
0.000193
Page Count
72
Points per Page
0.041667
Series
Inventions and Inventors
Description
This book discusses the story of inventions that shape our lives, tracing the history and explaining how they worked then and how they work now.