My November 2010 project for the Math Forum has just been posted. It's pretty simple - two different ways to create a hexagonal pyramid.
One method is to shrink the top of a hexagonal prism, and the other is creating faces by hand after setting the point at the tip.
What's always amazed me about SketchUp is how you can always come up with a few ways to complete the same project. If you do this project and come up with other methods, please let me know!
Anyone can design anything in 3D! http://www.3dvinci.net/