Over the summer, I’m doing math at Khan Academy, which is sort of an online school. I like to look at the recreational math section too. The “Doodling in Math and More” section is very interesting. Today I watched some videos about Mobius strips. They are basically one-sided twisted loops of paper that can do amazing things. They are very simple to make, and fun to play with. I encourage you to check out the videos here. There are two videos, and one is a very cute story with a Mobius strip.