Lisa sent this note about doing picnic geometry in her class! Are you a teacher who’s using Make: in class? Let us know and make sure to put pictures of the projects in the Make: Flickr Pool!

## 6 thoughts on “Paper Plate Spheres in Class”

1. Canarack says:

more proof that kids wouldn’t hate school so much if it was interesting…

2. Vicious says:

Wait… Is that a d20 on the far right?

3. peridot says:

This missed some nice possibilities: you can make all the platonic solids this way. For a tetrahedron or octahedron, just use four plates with the same triangle; for a cube, draw squares, for a dodecahedron, draw a pentagon.

If you have clever kids, show them one or two and ask them to come up with other designs where all the faces, all the edges, and all the vertices are the same. With a little luck you’ll get some that don’t quite qualify, in which case you can point out why; there are only these five. If you’re really on the ball, you can give them the proof that there are no others (written up on a spare paper plate, perhaps); it’s based on the Euler characteristic, V-E+F=2.