📊 Visual Aids & Technology · Lesson 1 of 8
Designing Effective Slides
Your slides are a visual companion to your voice — not a script. When a slide tries to say everything, the speaker becomes unnecessary. One idea per slide, shown simply, is the entire principle.
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Weak Slide vs Strong Slide — Same Content, Different Design
The diagram compares weak and strong slide design across three elements — title, body, and visual — using this example as the content. The weak version puts everything on the slide; the strong version puts one thing on the slide and lets the speaker say the rest.
💡 Tip: If the audience can understand your slide without you in the room, you have over-designed it. The slide should require the speaker to be complete.
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Worked Example: One Slide, Two Versions
Topic: 'Why most professionals will never use AI effectively.' Two versions of the same opening slide — same data, completely different effect.
Weak version vs Strong version — same content: ✗ WEAK — SLIDE TITLE: "10 Reasons Why Most Professionals Fail to Use AI Effectively"
BULLETS: 72% lack training · 40% productivity gap · simple tasks only · culture blocks experimentation · prompt quality is the key
[Audience reads all five in silence. Speaker waits. The room does the work.]
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✓ STRONG — SLIDE TITLE: "Only 12% use it well."
VISUAL: One bar chart — 72% (have access) vs 12% (use effectively). Nothing else.
[Speaker says:] "Seventy-two percent of professionals have AI on their desktops. Only twelve percent use it effectively. That gap is not a technology problem. It is a skills problem. And it is exactly what we are going to fix today."
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The One Question to Ask Every Slide
Before moving on from any slide, ask one question. The answer tells you whether the design is right.
- ✓"What is the single thing this slide needs the audience to remember?" — If you cannot answer in one sentence, the slide is trying to do too much — split it or cut it
- ✓If the audience can read the slide without you, rewrite it — The slide shows the one thing; the speaker provides context, nuance, story, and meaning
- ✓Maximum 6 words in the title, no full sentences in the body — If a point needs a full sentence, it belongs in a spoken line — not on the slide
Key Takeaways
- 1One idea per slide — when the idea changes, the slide changes
- 2The slide shows the one thing; the speaker says everything else
- 3A weak slide makes the speaker redundant; a strong slide makes the speaker essential
- 4Ask: 'What is the single thing this slide must make the audience remember?' If you can't answer in one sentence, split the slide
- 5Maximum 6 words in the title; no full sentences in the body; minimum 24pt font