TED-Ed: Lessons Worth Sharing

TED-Ed

This particular series is focused on educators and students.  Anyone can submit an audio file that can be animated by TED-Ed, placed on their website and shared with the world.

Take the TED-Ed Tour

Samples:
The Secret Life of Plankton

The Best Stats You've Ever Seen - Hans Rosling

After watching the video clips, teachers/students are asked some multiple choice and open ended questions on the content.  There is also a section to access for more information/resources.