Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.7
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
10250
Points per Word
0.000195
Page Count
64
Points per Page
0.03125
Series
Kingfisher Knowledge
Description
This book describes some of the inventions and discoveries that have transformed the fields of entertainment, transportation, communication, and medicine and includes illustrations and color photographs.