Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.8
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
11214
Points per Word
0.000178
Page Count
78
Points per Page
0.025641
Description
This book presents the stories behind forty things that were invented or named by accident, including aspirin, x-rays, Frisbees, silly putty, Velcro, and many more.