Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.4
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
13029
Points per Word
0.000154
Page Count
114
Points per Page
0.017544
Description
Brief factual stories about how various familiar things were invented, many by accident, from animal crackers to the zipper.