Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.7
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
10125
Points per Word
0.000198
Page Count
48
Points per Page
0.041667
Description
From the earliest observations of nature to the marvelous discoveries, inventions, and experiments that followed, this book explains how the knowledge of science has grown.