Secret Codes (Over 3,800 results)

Condition: Good. Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc.

Paperback. Condition: Good.

Condition: Acceptable. Item in acceptable condition! Textbooks may not include supplemental items i.e. CDs, access codes etc.

Condition: Very Good. Item in very good condition! Textbooks may not include supplemental items i.e. CDs, access codes etc.

Condition: Good. Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc. Jeff Schinkel (illustrator).

Hardback. Condition: Very Good. From the fall of Troy to interstellar messages by way of the Underground Railroad and Captain Midnight, Secret Messages is a collection of ninety-five of the most interesting examples of code and concealed communications throughout history. Authors William S. Butler and L. Douglas Keeney have compiled a fascinating array of encrypted communications from a varied field. Many of these examples are from times of war, including the story of how a too simple code was the undoing of Benedict Arnold, and how Commander Jeremiah Denton blinked in Morse code to indicate that his North Vietnamese captors were torturing him. Others are more lighthearted, such as the creative use of hand signals by catchers and managers in modern baseball. And some selections offer a glimpse into how codes are used in everyday life, unbeknownst to most of us, in places like hospitals, police stations, and firehouses. Uncovering hidden layers, Secret Messages will amaze you with its new insights into history and how it has been shaped by cryptography. It also explores the future of encryption, where technology will enable vast amounts of information to be hidden within minuscule hosts such as human DNA, or the dot of an "i." Full of stories of human creativity and ingenuity, Secret Messages is an engaging book that will inspire and delight.…

Hardback. Condition: Good. From the fall of Troy to interstellar messages by way of the Underground Railroad and Captain Midnight, Secret Messages is a collection of ninety-five of the most interesting examples of code and concealed communications throughout history. Authors William S. Butler and L. Douglas Keeney have compiled a fascinating array of encrypted communications from a varied field. Many of these examples are from times of war, including the story of how a too simple code was the undoing of Benedict Arnold, and how Commander Jeremiah Denton blinked in Morse code to indicate that his North Vietnamese captors were torturing him. Others are more lighthearted, such as the creative use of hand signals by catchers and managers in modern baseball. And some selections offer a glimpse into how codes are used in everyday life, unbeknownst to most of us, in places like hospitals, police stations, and firehouses. Uncovering hidden layers, Secret Messages will amaze you with its new insights into history and how it has been shaped by cryptography. It also explores the future of encryption, where technology will enable vast amounts of information to be hidden within minuscule hosts such as human DNA, or the dot of an "i." Full of stories of human creativity and ingenuity, Secret Messages is an engaging book that will inspire and delight. …

hardcover. Condition: Good.

Paperback. Condition: Very Good. Communicate in a language only you and your friends can understand. Goldsberry, Ryan (illustrator).

Paperback. Condition: Fair. Communicate in a language only you and your friends can understand. Goldsberry, Ryan (illustrator).

Paperback. Condition: Good. Communicate in a language only you and your friends can understand. Goldsberry, Ryan (illustrator).

Condition: very_good. Pages are clean with no markings. May show minor signs of wear or cosmetic defects marks, cuts, bends, or scuffs on the cover, spine, pages, or dust jacket. May have remainder marks on edges. Goldsberry, Ryan (illustrator).

hardcover. Condition: Fair.

Condition: like_new. Book is in like new condition with only potential shelf wear. No marking or highlighting.

Paperback. Condition: Very Good. "The author's upbeat, positive tone is refreshing and his enthusiasm about his topic is contagious." -- School Library Journal (starred review) Pssst! Do you know the difference between a code and a cipher? Can you tell a St. Cyr slide from a Cardano grille? Did you know that the discovery of a substitution cipher caused Mary Queen of Scots to lose her head? Don't look now, but packed into this practical field guide is everything a young person needs to know about the art of concealment -- making and breaking codes, mastering cipher systems, and experimenting with secret writing. Offering plenty of hands-on practice sessions, tips for creating a code-making kit, sidebars on secret codes in history, and an amusing pair of spies to illustrate techniques, Paul B. Janeczko's tantalizing Top Secret won't stay a secret for long. Back matter includes suggestions for further reading, an author's note, an answer key, and an index. LaReau, Jenna (illustrator).…

Paperback. Condition: Good. "The author's upbeat, positive tone is refreshing and his enthusiasm about his topic is contagious." -- School Library Journal (starred review) Pssst! Do you know the difference between a code and a cipher? Can you tell a St. Cyr slide from a Cardano grille? Did you know that the discovery of a substitution cipher caused Mary Queen of Scots to lose her head? Don't look now, but packed into this practical field guide is everything a young person needs to know about the art of concealment -- making and breaking codes, mastering cipher systems, and experimenting with secret writing. Offering plenty of hands-on practice sessions, tips for creating a code-making kit, sidebars on secret codes in history, and an amusing pair of spies to illustrate techniques, Paul B. Janeczko's tantalizing Top Secret won't stay a secret for long. Back matter includes suggestions for further reading, an author's note, an answer key, and an index. LaReau, Jenna (illustrator).…

Paperback. Condition: Fair. "The author's upbeat, positive tone is refreshing and his enthusiasm about his topic is contagious." -- School Library Journal (starred review) Pssst! Do you know the difference between a code and a cipher? Can you tell a St. Cyr slide from a Cardano grille? Did you know that the discovery of a substitution cipher caused Mary Queen of Scots to lose her head? Don't look now, but packed into this practical field guide is everything a young person needs to know about the art of concealment -- making and breaking codes, mastering cipher systems, and experimenting with secret writing. Offering plenty of hands-on practice sessions, tips for creating a code-making kit, sidebars on secret codes in history, and an amusing pair of spies to illustrate techniques, Paul B. Janeczko's tantalizing Top Secret won't stay a secret for long. Back matter includes suggestions for further reading, an author's note, an answer key, and an index. LaReau, Jenna (illustrator).…

Condition: good. Gently used with minimal wear on the corners and cover. A few pages may contain light highlighting or writing, but the text remains fully legible. Dust jacket may be missing, and supplemental materials like CDs or codes may not be included. May be ex-library with library markings. Ships promptly. LaReau, Jenna (illustrator). …

Paperback. Condition: Good.

Condition: Very Good. Item in very good condition! Textbooks may not include supplemental items i.e. CDs, access codes etc.

Paperback. Condition: Good. GREAT GIFT IDEA FOR KIDS WHO LOVE PETS CONGRATULATIONS You've just found your NEW FAVORITE coloring + activity book Get ready for 80+ pages of clever activities that will banish boredom and make you smarter while you laugh out loud PETS FROM AROUND THE WORLD Coloring + Activity Book goes WAY BEYOND the basics to deliver page after page of ADDICTIVE activities and FUN and FUNNY facts. Enjoy popular activities like mazes, crosswords, and spot-the-difference, and discover TOTALLY NEW kinds of activities you won't find in other books: Breed the ULTIMATE NEW PET using our funny pet breed name generator Draw a cat using LETTERS Follow the flowchart to discover your PET SOUL MATE These creative activities and fun-fact coloring pages relieve stress and hold your attention. Release endorphins as you solve the puzzles and LAUGH as you discover the unexpected answers Recommended for ages 8 and up List of activities: 25 Fun-fact coloring pages2 Hidden pet pictures5 Mazes1 Mind-Blowing Cats vs Dogs debate2 Mystery word pages3 How to Draw PETS tutorials2 Spot the Difference3 Mystery Dot to Dot4 Decoding secret words & jokes2 Pages of laugh-out-loud pet jokes1 Fill-in-the-blank Story3 Crosswords1 Word search1 Creative Pet Comic1 Pet Soul Mate flowchart3 Math challenges2 Creative drawing challenges1 Best in Show PET awardsAND MORE List of pets included: tarantula, cat, dog, llama, bird, reptile, tortoise, snake, lizard, fish, sugar glider, rabbit, hamster, gerbil, guinea pig, mouse, rat, hedgehog, mike the headless chicken, cheetah, monkey, bat, raccoon, penguin, koala bear, crocodile, quail, chameleon, cockatiel, dove, hare, pig, rhinoceros beetle, longhorn, salamander, chihuahua, bunny, sea monkey, hermit crab, purple pincher, peppermint angelfish, african giant millipede, tiger, pet rock, parrot, finch, chimpanzee, amano shrimp, green tree python, african dormouse, ferret, capybara, chinchilla, african pixie frog, bearded dragon, betta fish, gecko, chiengora, chow chow, pomeranian, turtle, leopard gecko, goldfish, iguana. Loveland, Mike (illustrator).…

Paperback. Condition: Very Good. GREAT GIFT IDEA FOR KIDS WHO LOVE PETS CONGRATULATIONS You've just found your NEW FAVORITE coloring + activity book Get ready for 80+ pages of clever activities that will banish boredom and make you smarter while you laugh out loud PETS FROM AROUND THE WORLD Coloring + Activity Book goes WAY BEYOND the basics to deliver page after page of ADDICTIVE activities and FUN and FUNNY facts. Enjoy popular activities like mazes, crosswords, and spot-the-difference, and discover TOTALLY NEW kinds of activities you won't find in other books: Breed the ULTIMATE NEW PET using our funny pet breed name generator Draw a cat using LETTERS Follow the flowchart to discover your PET SOUL MATE These creative activities and fun-fact coloring pages relieve stress and hold your attention. Release endorphins as you solve the puzzles and LAUGH as you discover the unexpected answers Recommended for ages 8 and up List of activities: 25 Fun-fact coloring pages2 Hidden pet pictures5 Mazes1 Mind-Blowing Cats vs Dogs debate2 Mystery word pages3 How to Draw PETS tutorials2 Spot the Difference3 Mystery Dot to Dot4 Decoding secret words & jokes2 Pages of laugh-out-loud pet jokes1 Fill-in-the-blank Story3 Crosswords1 Word search1 Creative Pet Comic1 Pet Soul Mate flowchart3 Math challenges2 Creative drawing challenges1 Best in Show PET awardsAND MORE List of pets included: tarantula, cat, dog, llama, bird, reptile, tortoise, snake, lizard, fish, sugar glider, rabbit, hamster, gerbil, guinea pig, mouse, rat, hedgehog, mike the headless chicken, cheetah, monkey, bat, raccoon, penguin, koala bear, crocodile, quail, chameleon, cockatiel, dove, hare, pig, rhinoceros beetle, longhorn, salamander, chihuahua, bunny, sea monkey, hermit crab, purple pincher, peppermint angelfish, african giant millipede, tiger, pet rock, parrot, finch, chimpanzee, amano shrimp, green tree python, african dormouse, ferret, capybara, chinchilla, african pixie frog, bearded dragon, betta fish, gecko, chiengora, chow chow, pomeranian, turtle, leopard gecko, goldfish, iguana. Loveland, Mike (illustrator).…

Paperback. Condition: Very Good. Code-cracking skills can be put to the test in this entertaining book which teaches children how to write and decode secret messages. Includes Semaphore and Morse code, the Grid code used in the American Civil War, Egyptian hieroglyphics, number replacement and alphabet switching codes and more. Each page features a different type of code, with an explanation of how it works and a practice code to crack. All answers are available at the back of the book. Meredith, Sam (illustrator).…

Condition: Good. Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc.

Paperback. Condition: Fair. Code-cracking skills can be put to the test in this entertaining book which teaches children how to write and decode secret messages. Includes Semaphore and Morse code, the Grid code used in the American Civil War, Egyptian hieroglyphics, number replacement and alphabet switching codes and more. Each page features a different type of code, with an explanation of how it works and a practice code to crack. All answers are available at the back of the book. Meredith, Sam (illustrator).…

paperback. Condition: Good. Good clean copy. Minimal signs of wear. Any images shown are stock photographs and product may differ from what is shown.

Paperback. Condition: Very Good. 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 diagrams.

Paperback. Condition: Good. Code-cracking skills can be put to the test in this entertaining book which teaches children how to write and decode secret messages. Includes Semaphore and Morse code, the Grid code used in the American Civil War, Egyptian hieroglyphics, number replacement and alphabet switching codes and more. Each page features a different type of code, with an explanation of how it works and a practice code to crack. All answers are available at the back of the book. Meredith, Sam (illustrator).…

Paperback. Condition: Good. 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 diagrams.

Paperback. Condition: Fair. 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 diagrams.