Support a Claim With Cited Evidence
Quill, a bright-eyed owl gripping a feathered pen, perches on a stack of open books in a lamplit study, annotating a newspaper article with bold underlines and margin notes while a blank argument essay waits on the desk beside her.
- Explain what a claim, evidence, and reasoning each contribute to a persuasive paragraph.
- Identify evidence from a source text that is relevant to a given claim.
- Construct a reasoning sentence that connects cited evidence to a claim.
- Evaluate whether a piece of evidence actually supports the stated claim or is off-topic.
Key terms
- Claim
- The arguable position a writer asserts is true
- Evidence
- A specific fact, quotation, or detail drawn from a source to support a claim
- Reasoning
- The writer's own sentence explaining how evidence proves the claim
- Signal phrase
- An introductory phrase that names the source of a quotation or fact
- Relevant evidence
- Support that directly addresses what the claim actually says
The Three-Part Engine
A persuasive paragraph runs on three parts that depend on one another: a claim that takes a position, evidence that supplies proof from a source, and reasoning that explains the link between them. Remove any one part and the argument stalls. Most beginning writers supply a claim and a quote but forget the reasoning sentence, leaving readers to guess the connection — and readers rarely guess the way the writer intended.
Choosing Evidence That Actually Fits
Strong evidence does more than sound impressive; it must address the exact words of your claim. If your claim is about middle-school reading time, evidence about adult workplace habits is off-topic no matter how convincing it sounds alone. Before you cite a source, restate your claim, then ask whether the evidence measures or proves that specific point. Relevance, not volume, is what makes evidence persuasive.
Worked examples
Build a supported point for the claim that schools should add recess.
- State the claim: 'Schools should add a second recess period each day.'
- Add a signal phrase plus evidence: 'According to a 2018 pediatrics policy statement, students with regular unstructured play showed improved classroom attention.'
- Write the reasoning that links them: 'Because attention is exactly what learning requires, more play directly supports academic focus.'
Answer: Claim + signal-phrase evidence + reasoning together form a complete, persuasive point.
Activity
Read each piece of evidence below and drag it to either 'Supports the Claim' or 'Does Not Support the Claim' based on the claim: 'Middle schools should replace one homework night per week with free reading time.'
Practice
Write a one-sentence reasoning statement that connects evidence about sleep loss to a claim that school should start later.
Decide whether evidence about teacher salaries supports a claim about student test scores, and explain your decision.
Common mistakes to avoid
- A quote proves the point by itselfEvidence never speaks for itself; the writer's reasoning sentence must explain how the quote supports the claim.
- Any impressive fact counts as supportEvidence only counts when it directly addresses what the claim says, not merely the general topic area.
Check your understanding
A student writes: "Schools should serve healthier lunches. Pizza and fries are unhealthy." What is MISSING from this persuasive point?
A student's claim is: 'Schools should start later in the morning.' She cites this evidence: 'Sleep researchers have found that teenagers who get fewer than eight hours of sleep show significant declines in memory and learning performance.' Which sentence best serves as REASONING after this evidence?
A writer's claim is: 'Students learn better in smaller classes.' She includes this evidence: 'Surveys show that teachers in smaller classes report higher job satisfaction.' Is this evidence relevant?
Recap
A strong persuasive point states a clear claim, cites specific evidence with a signal phrase, and adds a reasoning sentence that explains exactly how the evidence proves the claim. Always test that the evidence is relevant to the claim's precise wording.
Reflect
Which part of an argument — claim, evidence, or reasoning — do you most often leave out, and why?