My husband is very much a visual thinker. He thinks in terms of pictures. Tonight I found a slide presentation called 10 1/2 Commandments of Visual Thinking. It is the lost chapter from a book The Back of the Napkin by Dan Roam. In it he lists the 6 basic questions when trying to draw a solution and suggests what to draw to represent each question. For example, a when problem needs a timeline whereas a where problem needs a map.