Goal: transfer start-together duration reasoning from matching markers to two different safe activities. Proposed code: AC9MFM01. Prepare: Card 118, Set F quiet story/drawing setup and agreed accessible cues.
- Retrieve · 3 min. Child sees a mini run where B stops first and says which continued, using no distance clue.
- Model · 4 min. Start adult-read picture story and broad-paper drawing together; drawing ends first while story continues. Name story as longer in this observed run.
- Guide · 5 min. Children explain why count of words or drawn marks does not by itself give elapsed duration; point to shared start and different stops.
- Independent try · 7 min. Run puzzle-card sorting and cover drawing together with a new announced stop order; child reports the longer and shorter activity and the observed reason.
- Access check · 4 min. Offer equivalent visible/tactile marker or two soft distinct sounds. Ask if route change altered the comparison; it should preserve starts/stops.
- Exit · 2 min. Ask which two facts the explanation needs. Expect started together and which continued after the other stopped. If one is absent, model only that fact tomorrow.