Do you like regular crosswords and want to try something new and more challenging? Or maybe you like word games, like Scrabble or Anagrams? Cryptic crosswords combine the best parts of regular crossword puzzles and other word games. We'll teach you how clues like "Change of heart for our planet" can solve to "EARTH" and some of the rules for how cryptic crosswords work, and then you can try solving some on your own!

You've probably heard of sudoku, but what about slitherlink, nurikabe, fillomino, or tapa? In this class, you'll find out about many different kinds of grid-based logic puzzles, learn some techniques for solving them, and practice some puzzles yourself. I'll also go over some resources where you can find high quality puzzles.

An involution is a function that is its own inverse. In this class, you'll learn how to apply involutions to prove cool identities involving Pascal's triangle, Fibonacci numbers, and more, purely using combinatorial arguments!

Hello, everyone. Today: We will learn how to mechanically generate believable English sentences. We will learn how to translate nucleic acids to proteins. We will learn how to certify that a koan has Buddha-nature. We will learn how to listen to canons and fugues. We will learn how to break record players. We will learn how to convince our friends to treat us to dinner on their birthdays. Finally, we will learn how to prove Gödel's theorem that some true mathematical statements can never be proved.

Knots exist everywhere in real life: take a look at your shoelaces for one example. In this course, you will learn all about knots, links, and tangles in mathematics and what makes them awesome. We will start with the basics and go through a bunch of really surprising and amazing results in knot theory. In addition, we will talk about applications of knot theory to biology (yes, biology), chemistry, and maybe even physics. For students interested in mathematics, we may also look at connections with graph theory and topology. We will also do some hands-on activities: the string will be provided.

Do you like regular crosswords and want to try something new and more challenging? Or maybe you like word games, like Scrabble or Anagrams? Cryptic crosswords combine the best parts of regular crossword puzzles and other word games. We'll teach you how clues like "Change of heart for our planet" can solve to "EARTH" and some of the rules for how cryptic crosswords work, and then you can try solving some on your own!