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"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-time maneuverings, and contemporary hacking as well as explaining the mechanics behind the codes in accessible and kid friendly forms. Sidebars call out activities that invite the reader to try their own hand at cracking and crafting...
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"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...
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"Math has always been key to warfare. Scientists use calculations to understand how missiles fly, while soldiers use math to figure out how to hit targets. From codebreaking to recording casualties, discover how math lies at the heart of warfare."--Provide by publisher.
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""You are to report to Station X at Bletchley Park, Buckinghamshire, in four days time....That is all you need to know." This was the terse telegram hundreds of young women throughout the British Isles received in the spring of 1941, as World War II raged. As they arrived at Station X, a sprawling mansion in a state of disrepair surrounded by Spartan-looking huts with little chimneys coughing out thick smoke--these young people had no idea what kind...
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All you need to know about making and breaking codes. Gem Codes and Ciphers touches on everything from the smoke signals used by Native American Indians to encryption devices used by government agencies and the military. Not only does this handy, pocket-sized book cover the history of the development of codes and ciphers, it also has practical information and advice on how to make codes and, more importantly, how to break them! Topics covered:...
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"In Hunt a killer: the detective's puzzle book, you'll meet up with private eye Michelle Gray, who needs you to hit the books and fine-tune your investigative skills before the next big murder case. Under her expert guidance, you'll start with "investigative best practices" before diving into a world of curious ciphers, devious riddles, and other intriguing logic puzzles-- all designed to take you from amateur sleuth to a top-notch detective. With...