C20 · After-own staff
Complete neutral brief
For a fictional community display, need exactly 36 items. Pretend A packs 6 for $12; B packs 9 for $18. One $7 fee, budget $80. Whole packs/no extras. Choose lower cost among valid plans; if tied choose fewer packs. Send a useful note.
Specific criterion
Choose a valid whole-pack plan, model its cost and budget check, and communicate assumptions and a useful decision.
One staff worked possibility
A:6 packs/$79, $1 left. B:4 packs/$79, $1 left. Both supply 36; choose B. State quantity and fee assumptions.
Neutral support limit
Ask one neutral 'What does that amount count?' question if necessary and record it. Teach afterwards rather than covertly supplying the model.
Evidence scope
An individual response in a selected mode. Read/scribe if needed and record support; hide the teacher model first. Formative partial evidence, not an annual grade.