At the 2013 TIME 2000 conference, I ran a workshop on mathematical folding called *Fun With One Cut!* Here are a few of the introductory slides.

In the workshop, students explored some basic properties of plane geometry through folding and tried their hands at the infamous *fold-and-cut* challenge: given a plane figure drawn on a piece of paper, is it possible to fold the piece of paper in such a way that the figure can be removed from the paper with a single, straight cut?

This is a fun, hands-on mathematical activity, and is connected to some surprisingly deep and rich results in both geometry and mathematical origami.

You can download the set of templates I used for this workshop here, and you can find more of my mathematical folding resources here.