NTLSN · Crash Course · Lecturing

Lecturing & presenting well — a crash course

The lecture isn't dead — the bad lecture is. Four short lessons on explaining and presenting so people actually learn, then a self-check.

The one thing to remember: a lecture is not a reading-aloud of slides. The best ones explain, signal what matters, and pause for thinking.
4 lessons~10 min read1 self-checkGrounded in cognitive load & Mayer's multimedia principles

The lessons

1
Explain wellManage the load
›

Understanding has limits — working memory is small. Good explanation manages cognitive load: one idea at a time, worked examples, signposts.

  • Chunk: one idea at a time; signal what's important.
  • Use worked examples and analogies before abstraction.
  • Make the structure visible — where we are, where we're going.
2
Slides that help, not hurtMayer's principles
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Most slides increase load instead of reducing it. A few evidence-based rules make slides support understanding.

  • Cut text; don't read slides verbatim (the redundancy effect).
  • Pair words with relevant visuals; remove decorative clutter.
  • One message per slide; let the slide support you, not replace you.
Grounded in
  • Multimedia learning principles (Mayer)
  • Cognitive load theory
3
Make it interactiveA lecture is not a monologue
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Attention fades fast in passive listening. Breaking the lecture with thinking keeps people learning, even in a big room.

  • Pause every 10–15 minutes for retrieval, a problem, or a poll.
  • Ask students to predict, then reveal.
  • Give a one-minute ‘what's still unclear?’ before the end.
4
Presence & deliveryBe human, be clear
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How you deliver shapes how much lands. Clarity, pace and a bit of presence do a lot of the work.

  • Slow down; pause; vary your pace and emphasis.
  • Tell them why it matters before the detail.
  • Be accessible: caption recordings, share slides ahead.
◇ Bring it together — from the NTLSN commons
Browse engagement resourcesTeaching with Technology courseAccessibility preflight tool369 sector videos

Before your next lecture — a quick self-check

✓
I chunk to one idea at a time and signal what matters.
✓
My slides aren't walls of text I read aloud.
✓
Words are paired with relevant visuals, clutter removed.
✓
I pause for thinking every 10–15 minutes.
✓
I tell students why it matters before the detail.
✓
My recordings are captioned and slides shared ahead.
Source & attribution. Curated from cognitive-load theory and multimedia-learning principles (Mayer) and presentation good practice indexed by the NTLSN commons. Practitioner synthesis, not original research.
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