Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.9
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
6204
Points per Word
0.000161
Page Count
64
Points per Page
0.015625
Description
Describes various types of machines, how they are used, and how they work. Includes fact boxes and suggested activities and projects.