Building with Octahedra and
I led a MoMath
workshop for Math for America
which teachers and students created structures based on octahedra
I began by showing some magnetic polyhedral building blocks and
explaining aspects of the "oct-tet" lattice (a.k.a. "FCC"
Then participants started playing with the blocks, to get a feel
for the possible structures.
The blocks are fun to play with, so I wish I had lots more of
them. But this was just the warm-up.
The main activity involved a kit with nodes and struts, designed
for making the oct-tet lattice.