# Catch yourself up on the world of origami

Have you been doing other things and failed to notice the origami world evolve without you? Have you fallen asleep and been left behind? If you want to get caught up on what you’ve been missing in the world of origami, I suggest you visit Hannah’s origami blog, A Soul Made of Paper. She’ll have you caught up in no time.

I especially like giving herÂ blog a shout-out because Hannah is a student of mine. She often comes by my classroom to show me her latest paper creations. I like origami, and I’ve dabbled in it–stuck my toe in the stream, if you will–but Hannah is like a scuba diver in the origami world. She’s loves modular origami, but she’s also great at the artsy curved creations (like origami roses), textures, and tessellations.

If you haven’t clicked over to her blog yet, here are a few more pictures to whet your appetite.

Go get lost at A Soul Made of Paper. Maybe you can join her other 3000 followers on tumblr :-).

*All of the above are Hannah’s pieces and Hannah’s photos.

# Stellar application of the FTC

Here’s a “stellar” application of the Fundamental Theorem of Calculus, created by one of my students. It is a stellated icosahedron made up of 30 individual pieces of paper, all of which have the FTC printed on them. Doesn’t it just make you smile? đź™‚

# Origami Hyperbolic Paraboloid

AsÂ  I told my classes today, I went to part of a math conference this weekend (this EPADEL MAA meeting, to be specific).

The closing talk was on the Mathematics of Origami by Amanda Serenevy of the Riverbend Community Math Center. Afterward, Amanda taught some of us to fold Hyperbolic Paraboloids with a square of paper. (They are of course approximations to a hyperbolic paraboloid and the paper actually bends in non-rigid ways, which is a bit devious.) Here’s a link to the MAA website where they have instructions on how to make them. And here’s an instructional youtube video, too:

I’ve actually made one before, but I thought I’d highlight it again, since I advertised it in class today and thought my students would appreciate the instructions.

I might report more from the math conference another time soon. I had a good time!