USBORNE Over 50 Secret Codes

An entertaining activity book that teaches kids how to write and crack secret messages.

• Includes Semaphore, Morse code, hieroglyphics and letter-swap ciphers
• Each page explains a different code type
• Practice messages to decode on every page
• Answers included at the back

Author: Emily Bone
Publisher: Usborne
ISBN: 9781805072119
Ages: 6-9