Using Support Material Well
"Start with a joke" is common advice, and yet many people can't tell jokes well. "Dazzle 'em with statistics" is another old saw, which often quickly leads instead to the MEGO ("My Eyes Glaze Over") syndrome. And if support is proven faulty, it can come back to erode the speaker's credibility.
Having dandy support is good; using it well is even better, as the following examples show.
Avoid lengthy formal definitions, especially if shown as a lengthy paragraph on a visual aid. This is one of the easiest ways to add lead to your presentation, as pure dictionary descriptions are deadly dull. Generally better are brief paraphrased definitions with specific examples used to create clearer understanding faster. "There's ...