Demonstrating a Process
A demonstration adds a second channel to a speech: the audience watches while they listen. That can make an idea vivid, but it also divides attention. The speaker has to manage hands, equipment, timing and narration at once. This page shows how to prepare a demonstration that stays clear under pressure.
Choose a process that fits the time
| Process | Why it works | Watch out for |
|---|---|---|
| Tying a knot | Visible, quick, easy to repeat. | Hands may block the view. |
| Folding paper | Clear steps and a visible result. | Slow folds can lose energy. |
| Using a phone feature | Relevant to the audience. | Screen glare and small text. |
| Making a simple snack | Familiar and sensory. | Hygiene and allergy rules. |
| Measuring something | Shows a method. | Numbers can be hard to hear. |
| Drawing a diagram | Builds understanding step by step. | Back to the audience; slow drawing. |
Choose a process with three to five steps and a result the audience can see. A long, fiddly process will consume the speech and leave no time for explanation.
Task analysis
Break the process into the smallest steps a novice needs. Experts skip steps because they are automatic. Ask someone who has never done the task to follow your instructions and note where they hesitate.
| Step | Action | What to say | Common error |
|---|---|---|---|
| 1 | Hold the rope with both hands. | “Start with the rope in front of you.” | Skipping the starting position. |
| 2 | Cross the right end over the left. | “Take the right end over the left.” | Using left and right ambiguously. |
| 3 | Loop and pull through. | “Bring the end up through the loop.” | Blocking the view with hands. |
| 4 | Tighten. | “Pull both ends away from each other.” | Rushing the final check. |
Narrating while doing
The narration should describe what the audience needs to notice, not every movement. Use three kinds of sentence:
- Action: “I am folding the left corner to the centre.”
- Reason: “This keeps the edges aligned.”
- Check: “You should now have a triangle.”
Avoid narrating silently. If you stop speaking to concentrate, the audience loses the thread. Practise until the hands can do the task while the mouth explains it.
Positioning and sight lines
| Problem | Fix |
|---|---|
| Hands block the object | Hold the object to the side; use a document camera or tilt the table. |
| Speaker turns away | Stand at an angle; narrate before turning. |
| Object too small | Use a larger model, a projected image or a pre-made example. |
| Table too low | Raise it or demonstrate standing. |
| Audience cannot see the result | Hold up the finished object; walk it around or show it on screen. |
Equipment and backup
Every demonstration needs a plan for failure. Prepare the materials, test them, and have a second version ready.
- Bring spare materials for a dropped or broken item.
- Pre-make one finished example to show the result.
- Have a diagram or photograph if the live action fails.
- Know which steps can be skipped if time runs short.
- Keep small parts away from young audiences and check allergies.
- Follow safety rules for heat, blades, chemicals or electricity.
Pacing
Demonstrations slow a speech down. That can be good: the audience has time to see and hear. But dead air while you fiddle with equipment is not. Rehearse the transitions:
| Moment | What to say |
|---|---|
| Before starting | “I have three steps. Watch what happens to the shape.” |
| During a pause | “While I fold this, notice how the edge lines up.” |
| After a step | “That is step two. Here is the result so far.” |
| If something fails | “That did not work as planned. Here is what should have happened ...” |
| At the end | “The finished version looks like this. The key step was ...” |
Accessibility
- Describe what you are doing for people who cannot see the demonstration.
- Provide a written or photographed set of steps.
- Use high-contrast materials and a plain background.
- Repeat audience questions before answering.
- Offer a seated or remote version of the task.
- Check that the demonstration does not rely on a single sense.
Activity: demonstrate in ninety seconds
- Choose a three-step process.
- Write the action, reason and check for each step.
- Rehearse while speaking aloud, not silently.
- Film one run and watch where your hands block the view.
- Ask a partner to follow your instructions without seeing you.
- Revise one instruction that was ambiguous.
The audience is watching the result, not your hands. Pause at the end of each step, hold the object still and let the audience catch up before moving on.
Common errors
- Demonstrating something too complex. Fewer steps, clearer result.
- Turning your back. The voice is lost and the audience is excluded.
- Silent concentration. Narrate what matters.
- No backup. Equipment fails; the explanation should not.
- Rushing the finish. Show the result and explain what it proves.
- Ignoring safety. Check the room, materials and audience.
Next, study questioning and clarity to check whether the demonstration worked. The accuracy and ethics page covers honesty in evidence and demonstration.