0–4 orient: Display Orbit Hall's word any. Ask learners to predict which audience—20-card trial or 40-card wall—could challenge it. 4–9 source read: Attribute notice to its fictional editor and desk prices to a separate note; underline “delivery unknown”. 9–16 model: Work 20 ÷ 25 and 40 ÷ 25 as whole-set purchases, then establish $0.80 versus $0.70 per card. Ask why lowest unit price and lowest cash outlay are different questions. 16–27 route: A/B/C on the learner page produces two totals and a two-audience revision. The offline lab is optional, after a written prediction; the paper route is equal. 27–32 audit: Partners name the quantity, whole-set count, source and unknown delivery; do not reward “L always saves.” 32–35 exit: One true sentence for 40 and a different true sentence for 20; collect both.
Development draft · local review needed
Day 11 · A cheaper card depends on the wallYear 11 Inquiry · T1 W3–4 · Day 11 lesson
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Year 11 / Integrated / Term 1 / Weeks 03 04
Part of the full two-week lesson sequence. Check the pack guide and taught point before teaching.
Open for this lesson: Pack guide · Fresh learner checks · Aids and text routes.
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