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Day 4 — Association, with a boundaryYear 12 Maths · T1 W1–2 · Day 4 lesson

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Year 12 / Mathematics / Term 1 / Weeks 01 02

Part of the full two-week lesson sequence. Check the pack guide and taught point before teaching.

Open for this lesson: Pack guide.

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Teacher copy: This page may include teaching prompts or answer keys. Answer keys in this public library can be viewed by anyone. Give learners a clean prompt, use checks as formative evidence, and change a case locally when prior access matters.

Success: Describe a categorical association as different within-session percentages without claiming causation.

  1. Notice · 3 min. Show 60% morning and 30% afternoon for quiet choice. What changed across session categories?
  2. Model · 5 min. State “In this invented table, quiet choice is 30 percentage points more common among morning visits.” Explain percentage points, not “30% more”.
  3. Try · 6 min. Learners make a one-sentence association claim and a separate sentence identifying the compared rows.
  4. Compare · 5 min. Ask whether time caused the choice. Possible differences include which visits were recorded; data alone cannot decide. Avoid asserting a particular explanation is true.
  5. Transfer · 4 min. Students critique “Afternoons make visitors sociable” using one data fact and one limitation.
  6. Exit · 2 min. Collect a 60-versus-30 statement with denominator and a non-causal boundary. If the denominator is missing, practise “of each row” tomorrow.

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