Have you ever wondered why we write numbers the way we do? Come learn about the history of numbers, from tally marks to the number systems used by modern computers. We'll also work on some number-y puzzles and get a chance to think about our ideas for an ideal number system!

If you enjoy cooking but would rather not do it EVERY night, a cooking co-op might be a great solution: you cook every so often for a large group of people and get food when they cook for you. But even if you eat pasta every night, running a cooking co-op is a great exercise in answering the question "How do you balance lots of people's competing desires (for time commitment, cost, type of food, etc)?" (and of course, "How do you make sure people actually clean their dishes?") Come learn how some MIT groups answer these questions and get tips for cheap and easy vegetable recipes, how to adjust soup recipes to feed 30+, and more.

Is there any stopping gentrification? Is it possible to make a neighborhood a nicer place to live without displacing the people who live there? Learn about why this is such a hard question to answer (and why the rent is too darn high in general) and some possible solutions.