Cryptography has shaped the history of the world, from kings and queens to the average person today. It is a mighty tool that can be used for good and for bad. The techniques to encode messages have evolved over time, but the goal remains the same: to protect top-secret information from interception. Learn all about the history of cryptography and its modern uses with this high-interest book! Developed by Timothy Rasinski-a leading expert in reading research-this 6-Pack of nonfiction readers guides students to increased fluency and comprehension of nonfiction text. The complex text structure adds rigor and allows students to delve deeply into the subject matter. The images support the text in abstract ways to challenge students to think more deeply about the topics and develop their higher-order thinking skills. Informational text features include a table of contents, sidebars, captions, bold font, an extensive glossary, and a detailed index to further understanding and build academic vocabulary. The Reader's Guide and Try It! culminating activity require students to connect back to the text, and provide opportunities for additional language-development activities. Aligned with state standards, this text connects with McREL, WIDA/TESOL standards and prepares students for college and career. This 6-Pack includes six copies of this title and a lesson plan.