Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.4
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
3835
Points per Word
0.000261
Page Count
32
Points per Page
0.03125
Series
Top Ten; PowerKids Press
Description
This book profiles ten of history's most significant scientific discoveries, including the solar system, gravity, vaccination, pasteurization, antiseptics, x-rays, penicillin, and nuclear power, and discusses their effects on the world.