Delivering an Explanation

Year 9 Power of Speech • Expository • Delivery

Expository delivery has a particular challenge: the material is often unfamiliar, and the audience cannot re-read it. The speaker has to slow down enough for understanding without becoming dull. This page covers the delivery choices that help complex material land.

Pace for comprehension

Explanations need more pause than stories or persuasive speeches. The audience is building a model in their heads, and they need time to connect each step to the last.

Moment	Pace	Why
Opening frame	Slow and clear.	The audience needs the question and terms.
Mechanism steps	Moderate, with pauses between steps.	Each step needs processing time.
Familiar example	Slightly faster.	The audience can follow easily.
Key definition	Slow, with repetition.	The term must be retained.
Close	Slow and deliberate.	Consolidates the answer.

A common error is to speed up when nervous, just as the material becomes most demanding. Mark two or three places where you will deliberately slow down.

Emphasis

In an explanation, emphasis should fall on the words that carry the mechanism: the actors, the actions and the relationships. “The moon does not change shape; our view of its lit half changes.” The stress tells the audience what to compare.

Stress the key term the first time it appears.
Stress the contrast in a comparison.
Stress the number that matters, not every number.
Stress the consequence in a cause-and-effect sentence.
Do not stress every word; if everything is emphasised, nothing is.

Signposting aloud

The structure you planned on paper has to be audible. Say the signposts, especially at the start of a new section. A short pause before a signpost makes it stand out.

Moment	What to say
Start of mechanism	“There are three steps. Here is the first.”
Between steps	“That leads to the second step.”
Before an example	“Here is what that looks like in practice.”
Before a qualification	“There is an important exception.”
Before the close	“So let me answer the question I started with.”

Reading the audience

An audience listening to an explanation gives distinctive feedback: blank faces, furrowed brows, note-taking, whispers, phones. Treat these as data.

Signal	Possible meaning	Response
Blank faces	Lost or thinking.	Pause, restate the key idea, give an example.
Furrowed brows	Confusion or disagreement.	Slow down; ask a checking question.
Note-taking	Engaged; may need time.	Pause after key points.
Whispering	Confusion or distraction.	Address the confusion; invite a question.
Phones	Attention lost.	Change pace, ask a question, shorten.
Nods	Following or agreeing.	Continue, but do not assume understanding.

Do not over-interpret one face. Look for patterns across the room.

Managing visuals

Introduce the visual before you show it: “Here is a graph of ...”
Give the audience a moment to look before you speak.
Describe the shape and the point, not every data point.
Stand to the side so you do not block the screen.
Do not read the slide; add what is not on it.
Turn the screen off or blank it when you return to speaking.

Handling interruptions

In some settings, the audience will interrupt with questions. Decide in advance how you will handle them.

Interruption	Response
A clarifying question	Answer briefly, then return to the point: “Does that answer it? Good—back to the second step.”
A long anecdote	“That is a useful example. Let me finish this step and come back to it.”
A hostile challenge	“I am happy to take that at the end; let me finish the explanation first.”
A technical failure	Pause, fix it if quick, otherwise use the backup and continue.
A request to repeat	Repeat the key sentence, not the whole section.

Voice and body

Explanation can become monotone because the speaker is concentrating on content. Deliberately vary pitch and pace at transitions. Use gesture to show relationships: two hands for a comparison, a sequence for steps, a point for emphasis. Stand grounded and face the audience, especially when using a screen.

Activity: delivery pass

Record a two-minute explanation.
Watch once for pace: where did you rush?
Watch once for emphasis: which words stood out?
Watch once for signposts: could you hear the structure?
Watch once for audience contact: where did you look?
Choose one change and record again.

Clarity is a performance skill, not just a writing skill. The same script can be clear or impenetrable depending on pace, pause and emphasis.

Common errors

Rushing the mechanism. It is the part the audience most needs to hear slowly.
Speaking to the screen. Turn back to the audience.
Reading the slide. Add meaning instead.
Ignoring confusion. A blank face is feedback.
Over-emphasising. Too much stress flattens meaning.
No pause after a key point. The audience needs time to absorb it.

Next, read building an expository speech for the full workshop. The teacher notes offer planning and differentiation advice.