Young scholars solve addition and subtraction problems and decipher and write messages using a code. They read and discuss an informational fact sheet about the Navajo code talkers from World War II, and decode and re-code messages...

Students examine and discuss the Morse Code. In small groups they develop messages using Morse code and take turns decipering the messages.

Pupils explore the concept of code theory. In this code theory lesson, students discuss noise, error correction, Hamming distance, parity check matrices, and cyclic codes. Pupils develop these concepts through practice and discussion.