Hi, my name's Stefan. Today, I'm going to be speaking on possible classroom uses of cryptography in math. It's good to start students off with using different puzzles. Like cryptography, that's a way of sending messages. Let's say I have a cryptic message of these K=2. And our alphabet A, B, C, D, E. In cryptography if I say K equal 2 that means that the alphabet would be moved over 2 places, so A would now be C, and so on. What this does is it's just a fun way to get students involved in solving puzzles. And in mathematics puzzles are all over. And one of the first instances of puzzles is integration, which you learn later in math when you get into calculus. Things aren't always so clear, so you have to kind of solve a puzzle. And learning basic things and doing basic things like cryptography, it gets the students involved in puzzle solving.