Recently we mentioned about the book THE BACK OF THE NAPKIN (article below) which is based on the concept of using pictures to solve any type of problem.
If you look,it is easy to interpret & understand visuals as compared to reading. Think of it like this way, if you are able to present problems Visually, not only it helps in bringing clarity & deriving at possible solutions, but it also makes your audience understand & participate better.
Now I got this video of the author of the book explaining how to solve problems using pictures while he was at Google. Have a look. The video is followed by another video showcasing reasons behind sub prime crisis using pictures.
First video is about 55 mins and video after that is around 6 mins.
Have a look.