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cryptography posts

This code’s for oldies Brainteaser

by David Shaw, 12 December 2018 | 0 comments

Brain icon

If you’re sitting there twiddling your thumbs, see if you can decode this message. If you need a hint, you can always phone a friend! 3666882255533 443355544499 339987772

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Caesar cipher Activity

by David Shaw, 3 March 2015 | 0 comments

Two circles with letters on them, held together with a split pin.

Learn the Caesar cipher, one of the oldest codes ever devised!

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