![]() I could say, for example, that instead of typing the letter E I will type the letter F instead. What is a Secret Code or Cipher?Ī secret code, or cipher, is simply a substitution of one letter in an alphabet for another letter or number. And I’ve collected a set of online links to help you figure out secret codes of your own, as well as ideas on how to crack them. I’ve also patterned this project on a more complicated Google lesson plan which is linked below. Obviously, the field of ciphers is vast and complicated. This project will lead you through a high level method to create secret codes and ciphers, as well as find ways to decode them. ![]() ![]() And humans have to think through a series of questions, develop rules for possible solutions, and decide when a possible solution should be abandoned in favor of another. Computers need humans to provide directions. And computers on their own cannot decode secret codes. While you can use computers to crack secret codes, also called ciphers, they’re not always needed. Secret codes, or ciphers, are a great way to teach computational thinking.
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