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Break the Code: Cryptography for Beginners (Dover Children's Activity Books)

Break the Code: Cryptography for Beginners (Dover Children's Activity Books)

Break the Code: Cryptography for Beginners (Dover Children's Activity
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Break the Code: Cryptography for Beginners (Dover Children's Activity Books) Paperback - 2013

by Johnson, Bud

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Dover Publications. Used - Like New. Like New condition. A near perfect copy that may have very minor cosmetic defects.
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Details

  • Title Break the Code: Cryptography for Beginners (Dover Children's Activity Books)
  • Author Johnson, Bud
  • Binding Paperback
  • Condition New
  • Pages 80
  • Volumes 1
  • Language ENG
  • Publisher Dover Publications
  • Publication date 2013-05
  • Features Glossary
  • Bookseller's Inventory # A15B-03433
  • ISBN 9780486291468 / 0486291464
  • Weight 0.6 lbs (0.27 kg)
  • Dimensions 10.9 x 8.2 x 0.3 in (27.69 x 20.83 x 0.76 cm)
  • Age range 08 to 18 years
  • Grade levels 3 - 13
  • Category Children's Books/Ages 9-12 Fiction
  • Library of Congress subjects Cryptography
  • Library of Congress Catalogue Number 97019323
  • Dewey Decimal Code 652.8

About Wonder Book Maryland, United States

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With 3 stores less than 1 hour outside the DC/Metropolitan area (1 in Gaithersburg, 1 in Frederick and 1 in Hagerstown, MD), we have the largest selection of books in the tri-state area. Wonder Book and Video has been in business since 1980 and online since 1997. We have over 1 Million books for sale on our website and another 1 Million books for sale in our 3 locations. We have a very active online inventory and as such, we can receive multiple orders for the same item. We fill those orders on a first come first serve basis, but will refund promptly any items that are out of stock. Since 1980 it has always been about the books. ALL kinds of books from 95 cent children\'s paperbacks to five figure rare and collectibles. A merging of the old and new is where we started, and it is where we are today. Our retail stores have always been places where a reader can rush in looking for a title needed for a term paper that is due the next day, or where bibliophiles can get lost \"in the stacks\" for as long as they wish. In 2002 USAToday recognized us as \"1 of 10 Great Old Bookstores\", and we have been featured in numerous other newspaper and TV stories including Washington Post and CSpan.

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RETURNS are cheerfully accepted up to 30 days. We ship out within 1-2 business days and U.S. Standard Shipments usually arrive within 6-9 business days, Priority 3-6.

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Reader reviews for Break the Code: Cryptography for Beginners (Dover Children's Activity Books)

From the publisher

No, it's not a message from outer space! Just read it backwards, starting from the bottom line, to discover what this specially coded message says. (The extra letter "X" at the beginning was thrown in just to make the message a bit more mysterious.)
Codes have been used for centuries. Now, with the help of this entertaining book, you, too, will be able to decipher dozens of secret messages. Veteran cryptographer Bud Johnson not only describes the different techniques used in secret writing but also explains -- clearly and simply -- how to make and break six different kinds of codes: simple letter grouping, reverse trail, shift code, key word code, date shift code, and twisted path code. You'll even learn techniques for creating your own confidential messages!
Cartoons by illustrator Larry Daste accompany the 51 practice messages, along with easy-to-follow instructions explaining each type of code and how to use it. There's also a glossary defining common terms used by cryptographers, a sheet of reproducible graph paper for writing out messages, and a page of ready-made alphabets for shift and key word codes. And if all those funny drawings and helpful guidelines aren't enough to help you decode our secret messages, don't worry. Solutions are included at the end of the book.
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