A lot of texts that talk about presentation design cite a very clear rule: each slide has to contain only one idea. Here’s a slide from a presentation deck that says just that.
And here’s the next slide in the same presentation
Can you count how many ideas there are on this slide? I see four of them.
Can we do better?
First of all, we need to remember that most of the time, the slides accompany the presenters and not replace them. This means that you don’t have to put everything you say as a slide. In our case, you can simply show the first slide and give more details orally. On the other hand, let’s face it, the presenters often use slides to remined themselves of what they want to say.
So, if you need to expand your idea, split the sub-ideas into slides. You can add some nice illustrations to connect the information and emotion.
Making it more technical
“Yo!”, I can hear you saying, “Motivational slides are one thing, and technical presentation is a completely different thing! Also,” you continue, “We have things to do, we don’t have time searching the net for cute pics”. I hear you. So let me try improving a fairly technical slide, a slide that presents different types of machine learning.
First of all, the easiest solution is to split the ideas into individual slides. When I show the first slide in the deck below, I tell my audience that I am about to talk about different machine learning algorithms. Then, I switch to the next slide, talk about the first algorithm, then about the next one, and then mention the “others”. In this approach, each slide has only one idea. Notice also how the titles in the three last slides are smaller. In these slides, they are used for navigation and are therefore less important.
Cool! What if we have some more time? Or maybe the presentation is somewhat more important to us? In the example below, I added some nice illustrations. I also moved the titles to the side of the slide because why not?
We can get a bit crazy here and add so much information that everybody understands that this information isn’t meant to be read but rather serves as an illustration. This is a risky approach, I admit, but it’s worth testing.
To sum up
“One idea per slide” means one idea per slide. The simplest way to enforce this rule is to devote one slide per a sentence. Remember, adding slides is free, the audience attention is not.