Evidence-Based Arguments & Respectful Debate

Critical Thinking Unit - Lesson 8 of 22 | Year 9-10 | English / Social Studies

🌿 Whakataukī (Māori Proverb)

"Ko te kōrero te kai a te rangatira."

Meaning: Communication is the food of leaders.

But leadership kōrero is not “loud” — it is clear, evidence-based, and mana-enhancing for everyone in the room.

🎯 Learning Objectives

By the end of this lesson, you will be able to:

🔥 Starter: Hot Take or Evidence? (10 mins)

As a class, sort statements into: Hot Take, Opinion with reasons, or Evidence-based claim.

Example A

“Schools should ban phones because they ruin learning.”

Example B

“Phone-free classes improve attention — our class off-task rate dropped when we trialled it.”

Example C

“Phones are fine — people who complain are just old.”

Challenge: What evidence would strengthen the weak statements?

🧱 Explore: What Makes an Argument Strong?

CER / PEEL Quick Guide

  • Claim / Point: What are you saying?
  • Evidence / Example: What proves it?
  • Reasoning / Explain: How does the evidence support the claim?
  • Link: Connect back to the question and values.

Reminder: Evidence is not only “numbers”. It can be credible testimony, reports, data, and lived experience — but you must be transparent and respectful about whose voice it is.

🧪 Activity 1: Build an Argument from Research (20 mins)

Use your sources from Lesson 7 to write one strong argument paragraph.

Argument Paragraph Checklist

  • Clear claim + reason
  • At least 2 pieces of evidence (with source details)
  • Reasoning that explains the evidence (not just repeats it)
  • One sentence acknowledging a counterargument

Fallacy help: Logical Fallacies Detection Guide

🗣️ Activity 2: Structured Disagreement (20 mins)

Fishbowl / Structured Academic Controversy

  1. Round 1: Side A speaks (2 mins), Side B listens and paraphrases.
  2. Round 2: Swap roles.
  3. Round 3: Identify shared ground and what evidence is missing.

Norms: Attack ideas, not people. Ask questions. Use “I think… because…” not “Everyone knows…”.

🤔 Reflect & Connect (5 mins)

← Lesson 7: Research Skills Lesson 9: Ethical Decision-Making →