Top Secret: A Handbook of Codes, Ciphers and Secret Writing - Paul B. Janeczko

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Top Secret: A Handbook of - Disponibil la libris.ro

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Caracteristicile produsului Top Secret: A Handbook of

• Brand: Paul B. Janeczko
• Categoria: Juvenile Nonfiction
• Magazin: libris.ro
• Ultima actualizare: 11-04-2024 01:14:23

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Descriere magazin:
This practical field guide contains everything a young person needs to know about the art of concealment: making and breaking codes, mastering cipher systems, experimenting with secret writing, and making--and breaking--their own secret codes. Illustrations. 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.