Pattern Fibonacci Sunflower Drawing / Fibonacci numbers are an interesting mathematical idea.

430x640 - Look at links below to get more options for getting and using clip art. Original Resolution: 430x640 1,1,2,3...GO! Fibonacci Day at Jesuit // The Roundup Great weekend teaching pen + ink botanical illustration. 525x640 - A clear, well illustrated overall look at the illusion of perspective in picture making. Original