Search Results for: U S A Secret Code Puzzles For Kids Dover Childrens Activity Books

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 subjec

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

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 message

Dozens of intriguing puzzles pose and answer interesting questions based on world history, geography, popular culture, and many other subjects. Alphabet and num