Target/codes: compare changed answer T′ = X REST REST REST with contrasting U = REST X REST X after the same first T; AC9AMUFD01, AC9AMUFC01. Prepare: D answer-choice board, Practice D.
- Welcome · 3 min. Place first T in a fixed left role. Show two possible whole four-cell reply cards; both are legitimate invented plans.
- Model · 4 min. Trace T | T′ (two then one events) and T | U (two then two). U begins with a rest and answers on local 2 and 4. Do not call one reply universally “happy” or “better.”
- Try together · 5 min. Child identifies which reply copies more of T and which changes the opening; all versions keep two four-place groups.
- Child choice · 7 min. Child chooses a reply for a fictional paper bridge, light-box or own impersonal idea and explains what their choice is meant to do musically.
- Notice · 4 min. Record chosen score and stated reason. A silent board cannot establish any heard contrast.
- Close · 2 min. Put away practice cards. Tomorrow uses unfamiliar J cards without coaching.