Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
8.9
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
13056
Points per Word
0.000153
Page Count
63
Points per Page
0.031746
Series
Inventors & Inventions
Description
This book is an introduction to the science of rocketry from the time of the earliest Chinese rockets in A.D. 1231 to the present.