Building a Speech That Actually Persuades

Imagine you want your class to switch from paper hall passes to a digital sign-up sheet. You could just say 'trust me, it's better' — or you could bring a stopwatch, time how long the old system takes, and show your classmates the number. One of those approaches usually wins the argument. Today we're learning what separates a speech that just states an opinion from one that actually changes minds.

- The difference between a claim, a reason, and evidence - Three classic persuasion tools: ethos, pathos, and logos - How to spot (and avoid) a weak argument - How to build a 90-second persuasive speech with a clear structure

Every persuasive speech rests on three parts. The claim is what you want people to believe or do — 'Our class should get a 10-minute recess extension.' The reason is why — 'because students focus better after more physical activity.' The evidence is proof the reason is true — a study, a fact, an example, or something you measured yourself. A speech with only a claim ('recess should be longer!') is just an opinion shouted louder. A speech with a claim, a reason, AND evidence is an argument that can survive someone asking 'says who?'

More than 2,300 years ago, the Greek philosopher Aristotle identified three ways speakers persuade people, and they still work today. Ethos is trust — showing you're credible, honest, or knowledgeable ('I researched this for two weeks and interviewed our PE teacher'). Pathos is emotion — making the audience feel something ('Think about how tired and grumpy you feel by 2pm'). Logos is logic — using facts, numbers, and reasoning ('Three studies of over 500 students found a 12-minute recess boosted afternoon test scores by 8%'). The strongest speeches usually use all three together, not just one.

Not all reasons are good reasons. A common weak spot is a claim with NO evidence at all: 'Everyone knows homework is pointless.' Who is 'everyone'? Another weak spot is evidence that doesn't actually connect to the claim: saying 'my friend likes the idea' isn't proof it works for the whole class. Strong speakers ask themselves 'what's my best evidence, and does it directly support my exact claim?' before they ever start writing.

A tight, effective short speech usually follows four moves: (1) Hook — a question or surprising fact that grabs attention in the first 10 seconds; (2) Claim — state exactly what you want; (3) Support — your strongest reason plus evidence (this is the biggest chunk of your time); (4) Call to action — tell the audience exactly what to do next. Practicing this structure out loud, with a timer, is the fastest way to tighten a speech that rambles.