This is a brand new set of activity cards to unleash the inner code-breaker in all of us! The cards contain 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. Each card contains information about the code, including a full explanation of how it works, and fun activities in which readers can use the code. The cards are wipe clean and the pack includes a special pen with which to write the answers on the cards, making the pack entirely self contained and easily portable. The cards are robust and durable, ensuring repeated use.