Age
9-12
Grade
4-7
Paul B. Janeczko, Jenna LaReau
Top Secret: A Handbook of Codes, Ciphers and Secret Writing
Paperback
(Candlewick April 11, 2006)
, Reprint edition
"The author's upbeat, positive tone is refreshing and his enthusiasm about his topic is contagious." — School Library Journal (starred review)
Pssst! Do you know the difference between a code and a cipher? Can you tell a St. Cyr slide from a Cardano grille? Did you know that the discovery of a substitution cipher caused Mary Queen of Scots to lose her head? Don’t look now, but packed into this practical field guide is everything a young person needs to know about the art of concealment — making and breaking codes, mastering cipher systems, and experimenting with secret writing. Offering plenty of hands-on practice sessions, tips for creating a code-making kit, sidebars on secret codes in history, and an amusing pair of spies to illustrate techniques, Paul B. Janeczko’s tantalizing Top Secret won’t stay a secret for long. Back matter includes suggestions for further reading, an author’s note, an answer key, and an index.
- ISBN
- 0763629723 / 9780763629724
- Pages
- 144
- Weight
- 4.0 oz.
- Dimensions
- 7.1 x 0.4
in.