Over 50 Secret Codes

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By: Emily Bone | Illustrator: Sam Meredith | Series: Usborne Puzzles Code-cracking skills can be put to the test in this entertaining book which teaches children how to write and d ecode 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. Show more