Target/codes: compare A|A with held-ending A|A′, distinguishing unchanged occupied beat places from one fewer separate sound event; AC9AMUFD01, AC9AMUFC01. Prepare: B and E, two wide rows.
- Welcome · 3 min. Place the two complete eight-place scores side by side. Ask what the final band covers before counting sound events.
- Model · 4 min. Trace phrase 2: two short X in A|A are two events; one band across the same local places in A|A′ is one event. Both scores still have eight beat places.
- Try together · 5 min. Child uses separate broad counters to show six events versus five, while occupied places stay the same. Do not equate event number with tempo.
- Child choice · 7 min. Child chooses either ending for a fictional toy-bridge picture or drawn cloud display and explains their intended contrast, without claiming any viewer felt it.
- Notice · 4 min. Record where phrase 2 changes and one fewer event in the held version. If actual sound is chosen, note what was produced, not a presumed acoustic success.
- Close · 2 min. Save the comparison as a composition option for the next original score.