Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.6
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
6405
Points per Word
0.000156
Page Count
32
Points per Page
0.03125
Series
Smart Structures
Description
This book describes various kinds of tunnels, the methods and materials of their construction, and amazing or disastrous examples.