Texas Instruments
Texas Instruments: Numb3 Rs: Message of the Bottle
Based off of the hit television show NUMB3RS, this lesson is best used to serve as a preliminary introduction to coding and encryption. Messages are ciphered by single-letter substitution, and the lesson guides students into deciphering...
PBS
Pbs Nova: A Simple Cipher
The difference between a code and cipher is explained. See if you can solve a simple cipher challenge at the bottom of the page.
Shodor Education Foundation
Shodor Interactivate: Spy Game
Learners will learn about modular arithmetic in order to decipher encrypted messages.
Other
Curiosity in the Classroom: Principles of Encryption [Pdf]
In a world where people are sharing information every second online, securing that information is paramount. In this lesson students will understand the principle of encryption, how to decode encryption, and how to construct ciphers. The...
Khan Academy
Khan Academy: Encryption, Decryption, and Cracking
Julius Caesar encrypted messages two thousand years ago. By knowing the techniques of deciphering a code--frequency analysis, known text, and brute force--one can begin to understand the three key aspects of data encryption, decryption,...
National Institutes of Health
National Library of Medicine: Profiles in Science: Francis Crick Papers
Biographical information about Francis Crick as well as access to an archival collection of his papers, letters, photographs, and notes, including those related to the discovery of the double helix.
PBS
Pbs: Word Problems Using Addition and Subtraction of Fractions: Harry Gets Locked Up
This video features Harry and his cousin Harley. Harley is desperate to use Harry's bike, but first he must decipher the combination to the bike lock by solving a word problem. In the accompanying classroom activity, students complete a...
Instituto Latinoamericano de la Comunicacion Educativa
Red Escolar: El Codigo De Galileo
Decipher Galileo's code and read about his biography. Instructions are also given on how to construct a magnifying glass.