The Case of the Invisible Text
PowerPoint slide transitions are best left to the fourth-grade science fair crowd. But if you insist on using them (don't say we didn't warn you), make sure that your text doesn't behave like a Cheshire cat.
In a PowerPoint presentation on the future of learning technology, the slides leading up to this one (slide 18) are visually interesting and don't overdo the text or graphs. But slide 18 contains three bullet-type points that appear and then disappear as the presenter clicks through it. The only thing worse than putting multiple paragraphs of text into a slide is putting up text that vanishes unexpectedly. It's supposed to be a visual aid, not a magic show.