SketchUp is one of Google's new online tools. This one is great for students wanting to do some sort of 3D modeling. This could be very useful for science, math and social studies classes. If your school has good Internet bandwidth, this is a program certainly worth checking out. Below is what Google has to say.
"Google SketchUp (free) is an easy-to-learn 3D modeling program whose few simple tools enable you to create 3D models of houses, sheds, decks, home additions, woodworking projects – even space ships. You can add details, textures and glass to your models, design with dimensional accuracy, and place your finished models in Google Earth, share them with others by posting them to the 3D Warehouse, or print hard copies."