There's a great new tool for presenting information to students or teachers. It's sort of a zooming PowerPoint that changes directions. Free, just sign up and start creating. I'm going to give you a link to a great example by Peter Pappas. He uses Prezi to create an instructional video on The Reflective School.
http://prezi.com/z-iozettlllo/the-reflective-school-by-peter-pappas/
http://prezi.com/z-iozettlllo/the-reflective-school-by-peter-pappas/