Codes Ciphers And Secret Writing Dover Children S Activity Books

Author: Martin Gardner
Publisher: Dover Publications
ISBN: 0486247619
Size: 69.17 MB
Format: PDF
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"A fascinating, challenging book." ― A.L.A. Booklist
Learn to use the most important codes and methods of secret communication in use since ancient times. Cipher and decipher codes used by spies. Explore the famous codes that changed the fate of nations and political leaders. And enjoy hours of fun experimenting with cryptography ― the science of secret writing.
Beginning with simple letter substitutions and transposition ciphers, world-famous science writer Martin Gardner explains how to break complicated polyalphabetical ciphers and codes worked with grids, squares, triangles, and charts. You'll learn codes that are keyed to typewriters and telephone dials . . . even codes that use playing cards, knots, and swizzle sticks. Experiment with invisible writing ― inks that glow in black light and turn red under heat ― and explore the possibilities of sending messages through outer space to unknown worlds.
Using this book, you can solve the historically famous Playfair Cipher used by Australia in World War II, the Pigpen Cipher used by Confederate soldiers during the Civil War, Thomas Jefferson's Wheel Cipher, the Beaufort system used by the British Royal Navy, codes devised by authors for heroes in literature ― Sherlock Holmes, Captain Kidd, and the Shadow. And you will enjoy experimenting with bizarre methods of message sending ― the Dot Code, Knot Code, Swizzle Code, and more.
Young cryptanalysts, cipher fans, and puzzlists of all ages will find hours of intrigue and challenge in Codes, Ciphers and Secret Writing.
"A stimulating must for the intermediate cryptographer." ― The Kirkus Reviews

Codes Ciphers And Secret Writing

Author: Martin Gardner
Publisher: Courier Corporation
ISBN: 0486320316
Size: 21.52 MB
Format: PDF, Docs
View: 6749
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Cipher and decipher codes: transposition and polyalphabetical ciphers, famous codes, typewriter and telephone codes, codes that use playing cards, knots, and swizzle sticks . . . even invisible writing and sending messages through space. 45 ...

U S A Secret Code Puzzles For Kids

Author: Tony J. Tallarico
Publisher: Courier Corporation
ISBN: 0486494594
Size: 41.26 MB
Format: PDF, Kindle
View: 4610
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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.

Break The Code

Author: Bud Johnson
Publisher: Courier Corporation
ISBN: 0486291464
Size: 44.47 MB
Format: PDF, ePub, Docs
View: 1808
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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.

Worldwide Secret Code Puzzles For Kids

Author: Tony J. Tallarico
Publisher: Courier Dover Publications
ISBN: 0486798712
Size: 31.72 MB
Format: PDF, ePub, Docs
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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.

Mental Magic

Author: Martin Gardner
Publisher: Courier Corporation
ISBN: 0486146162
Size: 32.43 MB
Format: PDF
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Solutions appear at the end, with 64 illustrations in between. Author Martin Gardner has written more than 70 books on subjects from science and math to poetry and religion.

Mysterious Messages A History Of Codes And Ciphers

Author: Gary Blackwood
Publisher: Penguin
ISBN: 9781101151013
Size: 74.69 MB
Format: PDF, ePub, Mobi
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Here are the encrypted notes of Spartan warriors, the brilliant code-crackers of Elizabeth I, secret messages of the American Revolution, spy books of the Civil War, the famous Enigma Machine, and the Navajo code talkers.

Perplexing Puzzles And Tantalizing Teasers

Author: Martin Gardner
Publisher: Courier Corporation
ISBN: 9780486256375
Size: 58.43 MB
Format: PDF, Mobi
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Combines two previously published works, resulting in ninety-three brain-teasing puzzles, riddles, and questions with an emphasis on humor.

All About Marvelous Me

Author: Becky J. Radtke
Publisher: Courier Corporation
ISBN: 0486786269
Size: 51.10 MB
Format: PDF, ePub, Docs
View: 4361
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Loaded with fun pursuits from fill-in-the-blanks to journaling, this book inspires kids to write and illustrate details of their lives and thoughts. Activities include taking personality quizzes, imagining the perfect job, and more.