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Mysterious Messages: A History of Codes and Ciphers: A History of Codes and Ciphers by [Blackwood, Gary]
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Mysterious Messages: A History of Codes and Ciphers: A History of Codes and Ciphers Kindle Edition

4.5 out of 5 stars 11 customer reviews

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Length: 176 pages Word Wise: Enabled Enhanced Typesetting: Enabled
Page Flip: Enabled Age Level: 10 and up Grade Level: 5 - 6
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Editorial Reviews

From School Library Journal

Grade 5–8—Many books present readers with codes to crack and puzzles to solve, but this excellent narrative history of cryptography explains who developed the different systems of encryption and why—and who managed to crack the codes. Blackwood offers an accessible and often funny lesson in alternative history that features many names that readers will know (Julius Caesar, Queen Elizabeth I, and Thomas Jefferson, to name a few), as well as those who worked behind the scenes to create what they hoped were unbreakable ciphers. Wherever matters of national security were at stake, cryptography played a major role, and perhaps the most interesting lesson is that many landmark events would have turned out differently had it not been for cryptographers working on both sides to create and break the other side's secret messages. Blackwood provides challenging examples of each type of cipher for readers to try. The book's clever and appealing format, designed to look like a secret notebook of torn pages, photographs, and sketches taped to the pages, complements the subject perfectly. This is an excellent accompaniment to fiction series like Nancy Springer's "Enola Holmes" books (Philomel), which make use of many of the codes and ciphers Blackwood mentions.—Rebecca Donnelly, Loma Colorado Public Library, Rio Rancho, NM
Copyright © Reed Business Information, a division of Reed Elsevier Inc. All rights reserved.

Review

"Readers with Something To Hide will come away...with not only some new tools, but a great appreciation for the central role codes and ciphers have played in wars and diplomacy through the years." --Kirkus

"[An] excellent narrative history of cryptography." --School Library Journal

Product details

  • File Size: 18368 KB
  • Print Length: 176 pages
  • Publisher: Dutton Books for Young Readers (October 15, 2009)
  • Publication Date: October 29, 2009
  • Sold by: Penguin Group (USA) LLC
  • Language: English
  • ASIN: B002SZUDJS
  • Text-to-Speech: Enabled
  • X-Ray:
  • Word Wise: Enabled
  • Lending: Not Enabled
  • Screen Reader: Supported
  • Enhanced Typesetting: Enabled
  • Amazon Best Sellers Rank: #260,027 Paid in Kindle Store (See Top 100 Paid in Kindle Store)
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