Other
Air War College: Speaking Effectively: Preparing to Talk
Use tips from this experienced speaker to help you get through the jitters of public speaking. Explains how to assess your audience and adapt your presentation, how to choose a focus, and how to establish your purpose.
Khan Academy
Khan Academy: Make Your Own Dino Skin 1
Students use this program to design their own pattern for a dinosaur's leg. When they are happy with the result, press the Render in 3D button to see how it would look.