Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
9.6
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
3352
Points per Word
0.000298
Page Count
31
Points per Page
0.032258
Series
Invisible World
Description
This book describes the mechanisms that allow us to speak and breathe. The coauthor is Marta Serrano.