Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.2
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
5511
Points per Word
0.000181
Page Count
48
Points per Page
0.020833
Series
STEM on the Battlefield
Description
From crossbows and cannons to rocket launchers and laser-guided missiles, discover how physicists have changed weapons and warfare.