Goal: make a source-bounded comparison and reject a preference inference. Proposed codes: AC9EFLA05, AC9EFLY05, AC9EFLY01. Prepare: A, DATA SAYS / NOT SHOWN cards, Card 183.
- Oral/print · 3 min. Say “more cards” and segment its two spoken words; adult reads the category names.
- Read · 4 min. Reread A's three rows without the adult interpretation note; invite a child to request a reread.
- Model · 5 min. Put “More circle cards than triangle cards” under DATA SAYS and cite six versus two. Put “Children prefer circles” under NOT SHOWN: no child response appears in A.
- Child try · 7 min. From Card 183, child constructs a supported comparison, gives the two source counts and identifies one claim a paper inventory cannot settle.
- Check · 4 min. Offer “Triangles are the worst because there are two.” Child changes it to “The tray has two triangle cards,” keeping quantity separate from value.
- Exit · 2 min. Child says or selects “I know ___ because ___”; accept an adult scribe and keep the child's actual words.