Goal: independently transfer fixed-total ratio division and simple scale reasoning to new fictional pack and plan data. 25 = 2 + 3 + 15 + 3 + 2.
- 0–2: Say this is a public formative check, not a secure exam, real plan or school/QCAA assessment instrument. Save first responses.
- 2–5: Give exact prompt, calculator and neutral access supports without solving its new ratio or scale.
- 5–20: Routes: distribute counters into labelled equal-part trays and use a physical scale strip; complete blank ratio/plan tables; write, type, dictate or AAC the same equations, units and checks. Record any mathematical hint separately.
- 20–23: After collection, use different invented values to revisit total parts and cm-to-m conversion.
- 23–25: Use the public staff key for one targeted response move. Move: set a new local case if public-key access affects independence.
Alternative domains: imaginary model-garden signs or paper exhibit labels after collection. Optional/home: explain why a drawing ratio cannot verify a real wall's dimensions. After-check swaps.