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Code-cracking skills can be put to the test in this entertaining book which teaches children how to write and decode secret messages. Includes Semaphore and Morse code, the Grid code used in the American Civil War, Egyptian hieroglyphics, number replacement and alphabet switching codes and more. Each page features a different type of code, with an explanation of how it works and a practice code to crack. All answers are available at the back of the book.





























































| Best Sellers Rank | #31,722 in Books ( See Top 100 in Books ) #68 in Children's Word Games Books (Books) #148 in Children's Craft & Hobby Books (Books) #230 in Children's Puzzle Books (Books) |
| Customer Reviews | 4.6 out of 5 stars 43 Reviews |
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