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Article
Khan Academy

Khan Academy: Feedback

For Students 9th - 10th
Khan Academy is asking for feedback on lesson in cryptography.
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Article
Khan Academy

Khan Academy: The Euclidean Algorithm

For Students 9th - 10th
As related to cryptography, understanding and providing proof of the Euclidian Algorithm.
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Article
Khan Academy

Khan Academy: Modular Multiplication

For Students 9th - 10th
Understanding modular multiplication and its proof as related to cryptography.
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Article
Khan Academy

Khan Academy: Modular Addition and Subtraction

For Students 9th - 10th
As related to cryptography, understanding the concept of modular addition and modular subtraction and finding the proof.
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Article
Khan Academy

Khan Academy: Fast Modular Exponentiation

For Students 9th - 10th
Understanding modular exponentiation in cryptography.
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Article
Khan Academy

Khan Academy: The Discovery

For Students 9th - 10th
The set up to breaking the cryptography code of The Discovery.
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Article
Khan Academy

Khan Academy: Clue #1

For Students 9th - 10th
Clue 1 in the cryptography challenge.
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Article
Khan Academy

Khan Academy: Introduction

For Students 9th - 10th
Introduction to the cryptography challenge including rules.
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Article
Khan Academy

Khan Academy: Clue #4

For Students 9th - 10th
Clue 4 of the cryptography challenge.
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Article
Khan Academy

Khan Academy: Clue #3

For Students 9th - 10th
A third clue to the cryptography challenge.
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Article
Khan Academy

Khan Academy: Clue #2

For Students 9th - 10th
A second clue to the cryptography challenge.
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Article
Khan Academy

Khan Academy: What Is Modular Arithmetic?

For Students 9th - 10th
Find out the basics of modular arithmetic.
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Article
Khan Academy

Khan Academy: Xor and the One Time Pad

For Students 9th - 10th
This article focuses on cipher codes especially XOR and the one-time pad. Let's look at a visual examples to see the different scrambling effects of AND vs. OR vs. XOR by encrypting an image. Here is a digital image of Charles Babbage.
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Activity
Texas Instruments

Texas Instruments: Numb3 Rs: Code Crackers

For Teachers 9th - 10th
Based off of the hit television show NUMB3RS, this lesson introduced students to simple methods of cryptography, most notably the Caesar cipher. By sliding the alphabet a certain number of spaces, students code and decode messages, and...
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Unit Plan
TED Talks

Ted: Ted Ed: How to Organize, Add and Multiply Matrices

For Students 9th - 10th Standards
When you're working on a problem with lots of numbers, as in economics, cryptography or 3D graphics, it helps to organize those numbers into a grid, or matrix. Bill Shillito shows us how to work with matrices, with tips for adding,...
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Article
Khan Academy

Khan Academy: Learn More About the Internet on Khan Academy

For Students 9th - 10th
Provided are links to Khan Academy content on the following subjects: Computers and the Internet; HTML/CSS; Cryptography; and SOPA/PIPA.
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Activity
University of Ottawa (Canada)

University of Ottawa: Linear Algebra Close to Earth

For Students 9th - 10th
The author of this site endeavours to explain how linear algebra has many applications in a wide range of disciplines, to help students see its uses in the real world.
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Lesson Plan
US National Archives

Nara: Teaching With Documents: The Zimmerman Telegram

For Teachers 9th - 10th
This is an excellent resource for anyone intersted in the Zimmermann Telegram: click to see the original coded message, the decoded message, and read about the implications of the telegram. This National Archives and Records...
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Online Course
Massachusetts Institute of Technology

Mit: Open Course Ware: Great Ideas in Theoretical Computer Science

For Students 9th - 10th
A complete course on theoretical Computer Science presented at the college undergraduate level. The course attempts to describe Computer Science beyond the computer, focusing on mathematical tools, complex systems and classic problems,...
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Primary
National Institute of Standards and Technology (NIST)

Fipsp: Authentication Technology Alternatives

For Students 9th - 10th
These guidelines describes the primary alternative methods for verifying the identities of computer system users, and provides recommendations toFederal agencies and departments for the acquisition and use of technology which supports...
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Primary
Other

Marshall Foundation: The Shakespearean Ciphers Examined

For Students 9th - 10th
Both William and Elizebeth Friedman worked at Riverbank Laboratories. Elizebeth was tasked with applying cryptographic techniques to analyze William Shakespeare's writings in order to prove that they were in fact written by Francis...
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Unknown Type
Khan Academy

Khan Academy: Cyber Codes Quiz

For Students 6th - 8th
Try this quiz about cyber encryption.
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Handout
Wikimedia

Wikipedia: Code Talker

For Students 9th - 10th
This encyclopedia entry from Wikipedia explores the role of Native American code talkers during World War II. Content focuses on how the code was developed, as well as why the code remained unbroken throughout the duration of the war.
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Article
Other

How Encryption Works and How It Will Change Your Business

For Students 9th - 10th
A thorough discussion of the business and professional uses of encryption.

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