Claims and Evidence
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What is Argument Writing?
Argument writing is when you try to convince someone that your opinion or idea is correct. Unlike telling a story or explaining facts, argument writing aims to persuade your reader to agree with your point of view.
The two most important parts of an argument are your claim (what you believe) and your evidence (proof that supports your claim).
💬 What is a Claim?
A claim is your main argument - the point you're trying to prove. It states your opinion on a topic.
A good claim:
- States a clear position
- Can be supported with evidence
- Is debatable (not everyone would agree)
📋 What is Evidence?
Evidence is the proof you use to support your claim. It shows your reader WHY they should believe you.
Good evidence:
- Directly supports your claim
- Comes from reliable sources
- Is specific, not vague
Types of Evidence
Facts & Statistics
Numbers, data, and proven information from research.
Expert Opinions
What professionals or specialists say about the topic.
Examples
Real situations or stories that illustrate your point.
Reasons
Logical explanations for why your claim is true.
How Claims and Evidence Work Together
The Structure of an Argument
Examples
Example 1: Strong Claim + Strong Evidence
Claim: "Dogs make better pets than cats."
Evidence:
- Dogs can be trained to do tasks like fetching and sitting on command
- Studies show dog owners get more exercise because they walk their dogs daily
- Dogs have been shown to reduce stress in their owners by 30%
Why it works: The evidence directly supports the claim with specific facts and research.
Example 2: Weak Claim vs. Strong Claim
Weak claim: "Pizza is the best food."
This is hard to prove - "best" is too vague and subjective.
Strong claim: "Pizza should be served in school cafeterias once a week."
This is specific and can be supported with evidence about nutrition, cost, and student satisfaction.
Example 3: Matching Evidence to Claims
Claim: "Students should be allowed to use calculators on math tests."
Strong evidence (relevant): "In the real world, adults use calculators for complex math problems, so students should practice using them too."
This directly supports why calculators should be allowed.
Weak evidence (not relevant): "Math is my favorite subject."
This doesn't explain why calculators should be allowed.
Practice: Match Evidence to Claims
Which evidence best supports this claim?
Which evidence best supports this claim?
Write Your Own Claim and Evidence
Practice Problems
Problem 1
Which of these is a CLAIM (not just a fact)?
Problem 2
What makes good evidence STRONG?
Problem 3
Claim: "Eating breakfast helps students do better in school."
Which evidence is STRONGEST?
Problem 4
What is WRONG with this claim: "Everyone knows that summer is the best season"?
Problem 5
Which type of evidence would be MOST convincing?
Check Your Understanding
Question 1
In your own words, what is the difference between a claim and evidence?
Question 2
Why do you need BOTH a claim AND evidence to write a good argument?
Question 3
Which is the best way to introduce evidence in your writing?
Summary
Claims
State your position clearly and specifically
Evidence
Support claims with facts, research, and examples
Connection
Explain how evidence proves your claim
Strong Arguments
Combine claims + evidence + reasoning
Next Steps
- Practice identifying claims and evidence in articles you read
- Try writing a short argument about a topic you care about
- Move on to learn about Addressing Counterarguments