I've been moving with the bodies that move to a different sound

[sovay]

I just taught my niece a simple substitution cipher and within ten minutes she had correctly deciphered a short message I had written to her. I could watch her make the connections, exclaiming as she recognized individual encrypted letters without having to refer to the key. Then she drew a picture at the bottom of the page to make it clear she had not just copied out but understood. Morse code, Playfair, one-time pads, here we come.

Comments

[yhlee]

I once jointly taught Playfair to a group of fellow student teachers as part of an interdisciplinary team (two history teachers and me in math)! Super fun, and crypto is great for those two subject areas. :D

Will you work her up to a Vigenère? ;)

[sovay]

I once jointly taught Playfair to a group of fellow student teachers as part of an interdisciplinary team (two history teachers and me in math)!

Oh, that's cool!

Will you work her up to a Vigenère?

I might have to work up to a Vigenère, but if she wants to, I will.