# Proof That Some Infinities Are Bigger Than Others

The always-excellent Vi Hart (previously) gives one of the most engaging explanations of multiple infinities we've come across in some time.

# Exploring Fractals with Dragons and Dungeons

In her two latest videos, maths-maven Vi Hart shows us how to draw fractals freehand, creating Koch curves, dragon curves, and eventually THREE DIMENSIONAL DUNGEONS – all with a little clever doodling.

# Think you know all there is to know about paper snowflakes? You pitiful, pitiful fool.

You have much to learn, dear reader. Settle in — it's arts and crafts time. Let math-craft-wunderkind Vi Hart expand your mind with this captivating tutorial on snowflakes, starflakes, and swirlflakes.

# Introducing the Hexaflexagon's delicious offspring, the Flex Mex burrito

Sure, the Hexaflexagon is fascinating all by its lonesome, but does it have any practical uses? Vi Hart shows us how to us the the multiple surfaces provided by the folding, flipping mathematical marvel to form a make a delicious concoction of beans, cheese, and guacamole. It's brilliant, if a bit messy.

# Have you met the hexaflexagon? If not, it's high time you did.

Last week, YouTube's resident mathematical mind-blower, Vi Hart, introduced many of us to the topological wonder that is the hexaflexagon. If you haven't seen it yet, get your life in order and go check it out. In fact, even if you have seen it, go ahead and watch it again. Then reconvene with us here for round two…

Remember the first time you saw a Möbius strip (the ring-shaped surface with only one side) and it felt like your world had been turned upside down? The hexaflexagon tends to have a similar effect. Only more so.