# Extending Eugenia Cheng’s “Shapes” video

I saw this amazing video from Eugenia Cheng tonight:

I had to write about some fun extensions because of the cookie cutting part reminded me of this related tweet from Laura Taalman:

If for some reason you don’t want to make pentagon cookies right away, an alternate use for the pentagon cookie cutters is to talk a little math with kids ðŸ™‚

Using Laura Taalman’s 3d Printed Pentagons to talk math with kids

Three other fun extensions of the activities in Cheng video that came to mind watching it are:

(1) Folding a dodecahedron into a cube

Can you believe that a dodecahedron folds into a cube?

This project came from a paper folding tweet I saw from Simon Gregg:

Our friend Pamela Rawson also did it with paper:

Pamela Rawson’s “More 3D Geometry

so you definitely don’t need a Zometool set to make the shape!

(2) A second fun paper folding activity that you can use to extend Cheng’s video uses Paula Beardell Kreig’s “Puff Boxes”

The two projects we did with these boxes are here:

Paula Beardell Krieg’s Puff Boxes

Paula Beardell Krieg’s Puff Boxes – Day 2

(3) The last set of projects that came to mind that use ideas similar to the ones in Cheng’s video came from watching a lecture by Tasashi Tokieda:

Some of Tokieda’s fun ideas with MÃ¶bius strip are in this video:

and our projects using some of Tokieda’s other ideas ideas are here:

Tadashi Tokieda’s “World from a sheet of paper lecture”

So, enjoy the great new video from Eugenia Chen, go make some math cookies(!!) and play around with a few of the extensions of the ideas in her video ðŸ™‚