72 Pencils (well, 84 including the centers...)

Again, from George Hart (with a slight modification on my part). This actually stays together pretty much on it's own. I mean it holds together. Unfortunately, it's a little loose, so the pencils can fall out X-| Oh well.

georgehart.com/sculpture/pencils.html

A double-ruled Hyberboloid!

Inspiration was not mine: georgehart.com/skewers/skewer-hyperboloid.html

made from 6" skewers. Done after reading this Math Monday entry: momath.org/home/math-monday-01-24-11/

A double-ruled Hyberboloid!

Inspiration was not mine: georgehart.com/skewers/skewer-hyperboloid.html

Have #math on the brain today, #mathphoto17 #mathchat #engagemath #mathschat #MathMonday #maths #datamanagement t.co/gtNYfKDxgU - @MsMagFront