"PowerPoint affects not only the way we present and teach, but also the way we think, learn and understand. ... we should stop thinking in terms of technology and begin to think rhetorically."
-Jens Kjeldsen
http://tinyurl.com/rhetppt"5 Conditions for Effective Multimedia Presentations:
1-Spatial Contiguity
corresponding words-pictures near each other on page or screen
2-Temporal Contiguity
corresponding words & pictures presented simultaneously rather than successively in time
3-Coherence
minimize extraneous words, sounds & pictures
4-Modality
words presented as speech rather than text
5-Redundancy
Words presented as speech rather than as speech & text."
-Mayer, "Multimedia Learning" (2001), pg 187