**Title:** Caesar Cipher

**Description:**
In this lesson, one of a multi-part unit from Illuminations, students investigate the Caesar substitution cipher. Text is encoded and decoded using inverse operations.

**Standard(s): **

[MA2015] MI1 (9-12) 10: Determine the mathematical impact of the ancient Greeks, including Archimedes, Eratosthenes, Euclid, Hypatia, Pythagoras, and the Pythagorean Society. (Alabama)