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“What’s the rule for determining how many slides to use in a presentation?”
Well, like many answers from consultants, my answer is … it depends!
How Many Slides to Use in a Presentation?
In the past if you asked a presentation skills “pundit” you were likely to hear “one slide per minute,” but times are changing and I don’t think the answer is as simple as a certain number of slides per minute.
Again, it depends. It depends on the complexity of the content. It depends on if the slides are heavy in graphics or text. It depends if the slides use many progressive builds; it depends on how the builds are created. I’ve seen successful, dynamic 30-minute presentations that have used as few as 10 slides and as many as 150 sides. (Actually, I’ve also seen presentations with no slides that were great too, but you’re asking about presentations with slides.)
Complexity Needs to Be Considered
What is important to consider is the complexity of the ideas being presented.
In general, you should be able to talk for at least 30 seconds per slide. If you don’t have at least 30 seconds of content then you might consider combining the idea with another slide; or maybe use it as part of a progressive build.
For example, you may have a photo with one element highlighted; then you click to the next slide which is the same photo, except with a different element highlighted, and so on. Although you are using different slides, you are building progressively through a single main idea or, in this case, a single photo. However, again, if you’re not using a build then less than 30 seconds per slide may feel like you’re skipping something or glossing over details.
Read more about presentation time on www.better-presentation-skills.com
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