The Teacher Toolbox

1. petermac Said,

   Adrian, Some 15 – 20 years ago, I came up with a net for making a rhombic dodecahedron, famous because Johann Kepler recognised that squishy spheres, if close-packed, would deform into rhombic dodecahedra. That went down with the mob rather like Oleg McNoleg’s lead snowshoes, so he invented some planetary laws instead, but the rd’s remained out there.

   I last used my net at a school near you in about 1998 to teach the idea that crystals are made up of repeating structures, even weird ones, but I originally created it when I was playing with an idea for a sort of 3D version of GO, played on a finite field, the apices of a dodecahedron. Anyhow, it must be in the dungeon, sorry, store-room somewhere. It can be done, and I commend it to you as an exercise — or ask for a copy to be scanned and sent.

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