A neat project with a dodecahedron

Saw a really neat tweet this morning:

Six regular decagons in a dodecahedron form a icosidodecahedron@geogebra resource: https://t.co/nrzb6Im2ki#MTBoS #iteachmath #math #maths pic.twitter.com/9m5zcdSLbg

— Idan Tal (@MagicPi2) July 6, 2019

I thought it would be fun to see what the boys thought of this shape and then try to building using our Zometool set.

First I showed them the video:

Next we spent 20 min building the outside shell of the shape, but for now left the inside mostly empty. Here’s what the boys thought of the shape:

Finally, here is the completed shape – it is a nice little miracle that we could make the whole thing with the Zometool set!

Such a fun project! Happy for the lucky break from twitter this morning 🙂