Ciphers - Classroom Game that Highlights Key Features of a Good Cipher

Characteristic of a good cipher such that same letter should be encrypted differently each time could be for students difficult to discover. After playing this game most of the students will discover it themselves and all of them will understand it.

00:05 - Game rules
02:16 - Common student strategies
03:44 - Good cipher example

Music: https://youtu.be/CzPIL06k3yw