50 Secret Codes (Usborne Activity Cards), Emily Bone, Sam Meredith, Sam Meredith

Descriere

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.