"Discusses different methods for creating secret codes"--Provided by publisher.

Photographs, illustrations, and text describe how math was used to decipher coded messages throughout history.

Presents an overview of various types of codes and ciphers used throughout history, famous cryptologists, and how to create your own secret messages.

"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 as Julius Caesar and Thomas Jefferson; codes used during wars, including the Enigma machine, whose cracking helped the Allies gather critical information on German intelligence in World War II; and work currently being done by the...

"Communicate in a language only you and your friends can understand! Protect your diary from snooping siblings. Share your secrets with a BFF. Guard your texts from unwanted eyes. Create the lingua franca for your own fantastical secret world! Expert language creator David J. Peterson (inventor of languages for Game of Thrones, the Marvel Universe, and more) guides you as you create your own secret languages, codes, ciphers, and hidden messages. From...

As British spy Agent K traverses the globe on an undercover mission to expose a deadly criminal organization, he records his secret techniques in a manual for new recruits, in a title which includes a magnifying jewel on the front cover and a codex on the inside back cover for creating and deciphering codes.

"During WWII, Japan's navy relied on secret codes to communicate battle plans. By early 1942, US experts had cracked the code. The Japanese had planned a surprise attack on US Navy ships, but now the Americans knew the attack was coming. They turned the tables on the enemy and won a decisive victory. Math has always been key to warfare. Scientists use mathematical calculations to understand how missiles fly, or how to build faster airplanes. Soldiers...

From the ingenious ciphers of Italian princes to the spy books of the Civil War to the advanced techniques of the CIA, codes and code breaking have played important roles throughout history.

This activity book is filled to the brim with exciting activities for Nate fans of all ages. There is plenty of space for kids to get creative, and all the favorite characters from Nate's world are included--the know-it-all Gina, Nate's best buddies, Francis and Teddy, his rival, Artur, and his least favorite teacher, Mrs. Godfrey, aka Godzilla. With personality pop quizzes (which Big Nate character are you most like?), the fabulous fun 'o' meter,...