Goal: combine and partition 7 in a new context; distinguish a part from the whole. Codes: AC9MFN04, AC9MFN05. Prepare: card E, two textured or labelled trays.
- Retrieve · 3 min. Show a 9-card paper model, remove two, ask the child to demonstrate seven left.
- Model · 5 min. Put 4 game markers in tray A and 3 in tray B. Slide together without losing any: 7 whole. Separate again: 4 and 3 are parts of 7.
- Guide · 5 min. Build 7 as 5 and 2 using seven counters; child names both parts and checks by recombining.
- Independent · 7 min. Child receives seven blank counters and two trays. Find another split, such as 6 and 1, and show that all seven are present. Record the split actually made; more than one answer is correct.
- Transfer · 3 min. Ask whether 4 + 3 markers tells how far a ramp toy went. Expected no; it is a marker count.
- Exit · 2 min. Show 3 in one tray and 4 in the other, ask for whole 7 and one alternative part split. If whole and part were confused, start Week 20 with a five-object version.