Web resource for visual aid design
Often public speaking textbooks give visual aid advice that is overly technical, too simplistic for computer-savvy college students or just hopelessly outdated. I’m always on the search for basic advice that is also practical and will apply to a variety of software programs.
Andrew Dlugan’s “Slide Fonts: 11 Guidelines for Great Design” from the Six Minutes blog gives great advice (though I’m still partial to serif fonts myself) along with picture demonstrations about why the advice works, which you can use for class.
If you need some good material on visual aids, especially slides, this would be a good reading assignment for students or rules to present in class. It could be turned into an activity if followed by several “rule-breaking” examples for discussion.