0–4 launch: Read 25% margin and ask what denominator it implies to a buyer. 4–9 source: Label the cycling clue-badge publisher's claim and the separate $56/$70 note; do not endorse an actual cycle route. 9–16 model: On the base comparison mat, calculate $14 difference, $14÷$56=25% mark-up and $14÷$70=20% gross price margin. 16–27 independent route: Learners annotate a catalogue, use cost/sale bars or dictate a source-bound correction. 27–32 audit: A peer circles the denominator under each percentage and strikes quarter of each $70 sale. 32–35 exit: Give a two-line correction that avoids claiming net profit or an actual beneficiary allocation.
Development draft · local review needed
Day 23 · One dollar gap, two percentage basesYear 11 Inquiry · T1 W5–6 · Day 23 lesson
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Year 11 / Integrated / Term 1 / Weeks 05 06
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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