For years, I have used Zometools (sold here: http://www.zometool.com) to teach geometry. The constructions for the icosahedron and dodecahedron are easy to teach and learn, due to the use of short reds (R1s) and medium yellows (Y2s) for radii for the two of them, as shown below, with short blue (B1) struts as edges for both polyhedra. 250 more words

## Tags » Icosahedron

#### Welcome to Art Class

So the other day I was surfing my way through Amazon, when I stumbled upon an amazing deal: 1000 popsicle sticks for $4! Now I had been jonesing for an excuse to glue some stuff together, so I snagged that deal quick. 427 more words

#### Mission: Atlas

The Earth is changing.

And while morphogenetic and UVG (Unified Vector Grid 120 polyhedral Earth) fall under the category of ‘pseudoscience’, it is In my opinion, a very real science, and the basic principles all boil down to the power of interacting energies. 651 more words

#### An Unusual Presentation of the Icosahedron/Dodecahedron Base/Dual Compound

In this model, the usual presentation of the icosahedron/dodecahedron dual compound has been altered somewhat. The “arms” of star pentagons have been removed from the dodecahedron’s faces, and the icosahedron is rendered “Leonardo-style,” with smaller triangles removed from each of the faces of the icosahedron, with both these alterations made to enable you to see the model’s interior structure. 46 more words

#### Three Polyhedral Clusters of Icosahedra

In the last post on this blog, there were three images, and the first of these was a rotating icosahedron, rendered in three face-colors. After making it, I decided to see what I could build, using these tri-colored icosahedra as building blocks. 110 more words

#### On Icosahedra, and Pyritohedral Symmetry

In this icosahedron, the four blue faces are positioned in such a way as to demonstrate tetrahedral symmetry. The same is true of the four red faces. 160 more words

#### IcosaLEDron: A 20-Sided Light Up Ball

Tired of balls that are just balls, and not glowing geometric constructions of electronics and wonderment? Get yourself an IcosaLEDron, the latest in Platonic solids loaded up with RGB LEDs. 171 more words