Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.8
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2764
Points per Word
0.000181
Page Count
32
Points per Page
0.015625
Series
Dates with History
Description
This book relates how scientists in several countries over a period of many years conducted research that ultimately led to the invention of the atomic bomb, which was then used against Japan in the hope of ending World War II.