Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
3.9
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
1937
Points per Word
0.000258
Page Count
32
Points per Page
0.015625
Description
This book describes how Mattie Knight developed her first invention, a stop-motion device to make looms safer for workers.