Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.9
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
2888
Points per Word
0.000346
Page Count
32
Points per Page
0.03125
Series
20th Century...
Description
This book is a historical account of the scientists and their breakthroughs, and the inventors and inventions that have shaped the modern world.