Explains various methods used in cryptography and presents examples to help readers in breaking secret codes

Dozens of intriguing puzzles pose and answer interesting questions based on world history, geography, popular culture, and many other subjects. Alphabet and number codes, picture puzzles, and more, suitable for ages 8–11. Solutions.

Simply and clearly written book, filled with cartoons and easy-to-follow instructions, tells youngsters 8 and up how to break 6 different types of coded messages. Examples and solutions.

Take a tour of America without leaving home! This fun journey takes you through 50 full-page mazes, each created in the shape of a state and highlighted by the region's important landmarks. Solutions and complete U.S. map included.

Loaded with 27 exciting espionage-related puzzles, this book requires thrilling acts of derring-do. Young spies can engage in codebreaking, solve word searches, follow mazes, look for hidden objects, and other challenges.

Kids love secret codes, and this book offers dozens of intriguing challenges with insights into U.S. history, geography, pop culture, and a host of other subjects. Suitable for ages 8 to 12, the 36 puzzles reveal fun facts, from the extent of the Appalachian Trail to what Paul Revere really said on his midnight ride. Solutions included.