50 Secret Codes (Usborne Activity Cards)
Author(s): Emily Bone
A set of activity cards to unleash the inner code-breaker in all of us. It contains a combination of codes such as Semaphore and Morse code, as well as historical codes including the 'Grid code' used in the American Civil War and Ancient Egyptian hieroglyphics and traditional codes such as number replacement and alphabet switching codes.
General Information
- :
- : Usborne Publishing, Limited
- : Usborne Publishing, Limited
- : 0.317515
- : 01 January 2008
- : United Kingdom
- : books
Other Specifications
- : Emily Bone
- : Paperback
- : 4-Aug
- : Sam Meredith
- : English
- : 50
- : full colour illustrations throughout
