Google Sketch-Up

Google Sketch-Up is a free, professional grade modeling tool which allows users to create 3-D models of just about anything you could think of. 

You can download Sketch-Up by clicking here.

You can view tutorials on how to use Sketch-Up by clicking here.

You can download a "cheat sheet" for using Sketch-Up tools by clicking here.

You can see some examples of how Sketch-Up can be used in a variety of core subjects by clicking here.