Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.7
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
3353
Points per Word
0.000298
Page Count
32
Points per Page
0.03125
Series
Inside Military Machines
Description
From torpedoes to nuclear reactors, learn how submarine technology and strategy have changed throughout military history and experience life under the waves.