Usborne Over 50 Secret Codes
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Help develop your child's Bright Mind
Learning is what we love!
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Children love to learn secret codes and write encrypted messages and this book will teach them everything they need to know, including Semaphore and Morse code, "Grid code" used in the American Civil War, Egyptian hieroglyphics and traditional number replacement and alphabet switching codes.
112 pages, full colour illustrations throughout
Published: 2015 by Usborne Books
Dimensions: 201 x 131 x 9mm
Author: Bone, Emily
Illustrator: Meredith, Sam
Suggested Age Group: 6 and above