"A hands-on guide to introduce kids to the fascinating world of secret codes and ciphers, Code Cracking For Kids explores many aspects of cryptology, including famous people who used and invented codes and ciphers, such ...
Presents the basic "alphabet" of twenty-four hieroglyphic letters with the approximate English sound they represent and briefly discusses various other aspects of Egyptian culture.
handbook for the budding cryptographer including codes and ciphers, invisible inks, concealment techniques, spy stories and some history.
"Codes can carry big secrets! Throughout history, lots of good guys and lots of bad guys have used codes to keep their messages under wraps. This fun and flippable nonfiction features stories of hidden treasures, war-tim...
Discusses the history and different varieties of codes and ciphers, describing code machines, signals, sign language, picture languages, and hidden messages.