How does it help the learner understand the material in a way that is clearer than text alone? Relevance, detail and clarity can affect the perception and comprehension of graphic information. If a student cannot easily read or see something, or does not understand its relationship to the other information presented, then the graphic risks becoming a distraction.

What effect, if any, does the visual have on downloading and printing? In this regard, you may want to check with the webmaster for advice in preparing your image in a way that is compact and ensures accessibility.

One effective use of graphics demonstrates relationships such as those between concepts, or those between steps in a procedure.

Well designed visuals can also have a motivational effect on the learner. Graphics and images involve different processing by the brain, providing variety and relief to a presentation that is strictly textual.

Another good design feature maintains a consistent form throughout your slides. Use a similar style throughout your outlines, so that readers do not have to re-orient themselves each time they come to a new heading.

An effective visual presentation is easy on the eyes, aiming toward a simplicity that facilitates reading and comprehension.