Do you play piano? Do you want to play your favorite pop/EDM/r&b songs without having to find and purchase sheet music? If you already have a basic set of piano playing skills, then playing piano by ear is easier than you may think. In this class, we'll go over a step-by-step process to playing songs by ear, covering topics such as finding the key of a song, identifying chords, playing rhythmic patterns, and improvising. Note: you do NOT need to know how to read sheet music to take this class (that's kind of the point) :)

Tic tac toe is a classic game, but the standard version is pointless. It's far too easy to develop strategies that guarantee you'll draw or win. You can make the game more interesting by increasing the board size, but even that becomes too simple after a while. For a truly intriguing alternative version, you need to move on to higher dimensions (2D, 3D, 4D). In this class, you'll learn the basics of visualizing the fourth dimension through the lens of four-dimensional tic tac toe. You'll have the chance to verse other students in 3D and 4D games, and you'll even learn how to do so in your mind, without any pen or paper.

Do you play piano? Do you want to play your favorite pop/EDM/r&b songs without having to find and purchase sheet music? If you already have a basic set of piano playing skills, then playing piano by ear is easier than you may think. In this class, we'll go over a step-by-step process to playing songs by ear, covering topics such as finding the key of a song, identifying chords, playing rhythmic patterns, and improvising. Note: you do NOT need to know how to read sheet music to take this class (that's kind of the point) :)

Suppose you have a machine that can switch two people's bodies but each pair of bodies can enter the machine at most once. You and your friends keep switching bodies until everyone is in someone else's body. Is it possible to restore everyone to their original bodies? We'll be using MATH (in particular, cycles and permutations) to find out. The writers of the TV show "Futurama" actually proved that the answer is yes, using at most two extra people. *** Professor Farnsworth (in Bender's body): Now then Amy, we'll simply switch bodies, and then we'll...no, I'd be back in my body, but then you and Bender would be switched. And the Amy and Bender bodies can't trade minds again, since they just did! Amy (in Professor Farnsworth's body): Oh no! Is it possible to get everyone back to normal using four or more bodies? Professor Farnsworth: I'm not sure. I'm afraid we need to use...[dramatic music]...MATH!

Bitcoin is a digital currency that uses some pretty nifty math to guarantee its security. Come learn about how it works, what it's used for, and how the underlying technology can be used for problems totally unrelated to money.

Tic tac toe is a classic game, but the standard version is pointless. It's far too easy to develop strategies that guarantee you'll draw or win. You can make the game more interesting by increasing the board size, but even that becomes too simple after a while. For a truly intriguing alternative version, you need to move on to higher dimensions (2D, 3D, 4D). In this class, you'll learn the basics of visualizing the fourth dimension through the lens of four-dimensional tic tac toe. You'll have the chance to verse other students in 3D and 4D games, and you'll even learn how to do so in your mind, without any pen or paper.