Target/code: identify capacity and directly compare two school-approved plastic cups by adult-operated water transfer; AC9MFM01. Prepare: P168 adult-verified A smaller/B larger cups, stable tray, cloth and transfer card. No child pouring requirement.
- Notice · 3 min. Show two clear cups for a pretend toy-shelter rain-catch design. Ask what “holds more” means; point out that outer height alone may mislead.
- Model · 4 min. Adult privately preflights, then at the table fills A to its full usable brim, not a partial level, and pours it into B over the tray. Name the actual water transfer, not a picture, as evidence.
- Guide · 5 min. Reset and let child direct which cup starts full, where it pours and what to inspect. Give a neutral observation of remaining space if visual access requires it.
- Independent route · 7 min. Day 168 A/B/C uses the same real transfer with child-directed action in a toy shelter, pretend ticket stand or model garden shelter; child says B can hold more because all A water fit and B still had room.
- Boundary · 4 min. Ask what would happen if water spilled or B filled fully: result would be unclear or different, so retest. Do not score a drawn cup as direct evidence.
- Exit · 2 min. Child names capacity and one observed clue. If no safe actual transfer is possible, defer this evidence and rehearse vocabulary only.