Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.3
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4471
Points per Word
0.000224
Page Count
32
Points per Page
0.03125
Series
20th Century...
Description
This book takes a close look at telegraphy, early experiments with radio, and inventions for storing sound. It also highlights the first press barons and explores the birth of cinema.