There’s lots of stuff out there about how to make really great powerpoint (and about terrible PowerPoint). What I’ve observed is that people read these great suggestions and think “I could never do that” (which isn’t true) and use that conclusion to do nothing different. Because the leap to “No more than six words on a slide. EVER.” is a big one.
I’m actually a big believer in taking that leap, because once you leap, your audience has no choice but to listen to you, the presenter, instead of pretending that the most important thing up there is the slide (it isn’t).
On the assumption that lots of people won’t make the big leap (yet), here’s a baby step: the amount of words on your slide should NEVER be the same as the amount of words you say.
Ideally your slide has very few words and you have a lot of interesting stuff to say. Another extreme would be that your slide is full of a lot of really rich content (I admit, I fear this really is “too many words”…) and you just say a few words and let people read.
But when you have a bunch of words and a bunch to say it is totally confusing to your audience. Are they supposed to read or listen to you? Not only do they not know, you don’t know!
Number of words you say ≠ Number of words on the slide
(And hopefully once you start down this path you’ll end up at 6-word slides.)