Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.4
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4046
Points per Word
0.000247
Page Count
32
Points per Page
0.03125
Series
Inventions In...
Description
This book tells the history of inventions that have advanced science and technology, from the microscope and telescope to supercomputers, lasers, and genetic fingerprinting.