Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
8.4
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
7294
Points per Word
0.000137
Page Count
77
Points per Page
0.012987
Description
This revised edition introduces readers to sixty major inventors, from the unknown inventor of the wheel to today's developers of virtual reality.