Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.1
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
5178
Points per Word
0.000193
Page Count
48
Points per Page
0.020833
Description
Cryptography is a powerful tool that has been used throughout history for good and for bad. Learn to make and break the same ciphers used by monarchs, spies, and soldiers.