50 secret codes

Descriere

50 secret codes

• A wonderful set of wipe-clean activity cards for aspiring code-breakers!
• Includes Semaphore and Morse code, „Grid code” used in the American Civil War, Egyptian hieroglyphics and traditional number replacement and alphabet switching codes.
• Each card contains information about the code, an explanation of how it works and fun coding activities.
• Includes a special pen to write on the cards.