Encryption and Coding – 100 Years Before HTML

Interesting how the art of the cryptic language has been something that we humans practiced for a long time. I use this as a preamble to my 5th grade class on coding.

Students could see a broader context of coding when we discuss the following:

There’s a wonderful story of how Thomas Jefferson used to correspond with a friend who wrote to him in code – around the time of the authoring of the Declaration of Independence. Then there’s the predecessor to Braille, which was really a military code (‘night writing’) for soldiers to read messages without light.

And more recently, we have seen the news of how Jeremiah Denton, as a POW, ‘flashed’ a message to the world using his eyes –blinking the word ‘torture’ in Morse.


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