Text + Diagram -> into a Movie

Sometimes pictures can say much more than words. A diagram can provide the “aha” effect to help the readers better understand the written text. However, a video can be the happy medium to combine the two. For this assignment, find a written explanation of a concept and a simple illustration/diagram that further clarifies that concept. Then make a movie combining the two.
Here’s an example: http://blog.neverthesameriver.com/?p=1212