Ever done a Powerpoint? Yep.
Ever used a lot of time making it? Yep.
Still end up deleting half of what you’ve made, just before the presentation and cramming things in too tight? Yep.
Well going a round the world wide web I found several good sites and blogs on giving presentations – I’ll post a list of them later but now to the topic – The ten 10/20/30 rule. This a “For Dummies” kind of approach to giving presentations, but it’s a rule everyone should work with – why? Well.. because I think I couldn’t do a better job presenting it than Guy Kawasaki in his blog, I just made an abstract of his great post on the 10/20/30 rule.
It’s quite simple: a PowerPoint presentation should have ten slides, last no more than twenty minutes, and contain no font smaller than thirty points. This rule is applicable for any presentation to reach agreement: for example, a project summary, making a sale, forming a partnership, etc. Ten is the optimal number of slides in a PowerPoint presentation because a normal human being cannot comprehend more than ten concepts in a meeting.
You should give your ten slides in twenty minutes. Sure, you have an hour time slot, but you’re using a Windows laptop, so it will take forty minutes to make it work with the projector. Even if setup goes perfectly, people will arrive late and have to leave early. In a perfect world, you give your pitch in twenty minutes, and you have forty minutes left for discussion.
The majority of the presentations that I see have text in a ten point font. As much text as possible is jammed into the slide, and then the presenter reads it. However, as soon as the audience figures out that you’re reading the text, it reads ahead of you because it can read faster than you can speak. The result is that you and the audience are out of synch.
The reason people use a small font is twofold: first, that they don’t know their material well enough; second, they think that more text is more convincing. Total bozosity. Force yourself to use no font smaller than thirty points. I guarantee it will make your presentations better because it requires you to find the most salient points and to know how to explain them well. If “thirty points,” is too dogmatic, the I offer you an algorithm: find out the age of the oldest person in your audience and divide it by two. That’s your optimal font size.
So just remember 10 slides, 20 minutes, 30px font – THE 10/20/30 RULE!