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Public Speaking — Alpha School

Lesson 14: Debates

A debate is a structured argument about a motion — a statement such as "School uniforms should be abolished" or "Social media does more harm than good." One side, the proposition, argues in favour of the motion; the other side, the opposition, argues against it. Unlike an ordinary argument, a debate has rules, turns, and a judge or audience deciding the winner. It is one of the best ways to practise speaking, because it forces you to think quickly, listen carefully, and argue with evidence rather than volume.

Building an Argument

Every argument in a debate has the same three parts: a claim, a reason, and evidence. The claim is what you want the audience to believe: "School uniforms should be abolished." The reason explains why: "because they stop students expressing who they are." The evidence supports the reason: an example, a comparison, or something you have observed — for instance, that students in schools without uniforms still follow a dress code, or that uniform costs burden some families. An argument with a claim but no reason is just an opinion. An argument with a reason but no evidence is easy to dismiss. The strongest debaters build two or three solid arguments and develop each one fully, rather than listing ten thin ones.

Rebuttal: Answering the Other Side

The skill that separates good debaters from average ones is rebuttal — responding to the other side's arguments. Rebuttal starts with listening: you cannot answer an argument you did not hear. While the other side speaks, take notes on their main claims, then answer each one directly. The pattern is simple: "They say X, but..." followed by your reason. "They say uniforms save families money, but uniforms themselves cost money and must be bought from one supplier, so families cannot shop around." Good rebuttal is specific and calm. It attacks the argument, not the person — calling an opponent stupid or dishonest loses the audience and breaks the rules of most debates. And if the other side makes a point you cannot answer, do not pretend it does not exist; acknowledge it briefly and move to your strongest ground.

Speaking Like a Debater

Debate speaking has its own style. Be direct and confident: state your argument clearly, then support it, then move on. Signpost constantly so the judge can follow — "My first argument is...", "In rebuttal, they claimed...". Speak at a steady pace; debaters who rush sound panicked, and the judge cannot take notes on a talk they cannot follow. Keep your language respectful even when you disagree strongly, and remember that the goal is to persuade the judge or audience, not to defeat the other person. The best debaters are the ones who listen hardest, because listening is what lets them find the weak spot in the other side's case — and the strong spot in their own.

Key Terms

Motion
The statement being debated, such as 'School uniforms should be abolished'.
Proposition
The side arguing in favour of the motion.
Opposition
The side arguing against the motion.
Claim
What you want the audience to believe.
Evidence
An example, comparison or observation that supports a reason.
Rebuttal
A direct response to the other side's argument.

Discussion Questions

  1. Pick a motion and build one argument using claim, reason and evidence. Is your evidence strong?
  2. Why is listening the most important skill in a debate?
  3. What is the difference between attacking an argument and attacking a person?

Practice Questions

  1. What is a motion in a debate?
  2. What are the three parts of an argument?
  3. What is rebuttal?
  4. What pattern can you use for rebuttal?
  5. Why should debaters signpost constantly?
Show answers
  1. The statement being debated. Example: 'School uniforms should be abolished'.
  2. Claim, reason and evidence. A claim without a reason is just an opinion.
  3. A direct response to the other side's argument. It starts with listening and taking notes.
  4. 'They say X, but...' followed by your reason. It answers the argument directly and specifically.
  5. So the judge can follow the argument. Clear signposts make fast debate easy to track.
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