Target/codes: plan S–M–L gaps and compare early/late spacing while pitch, level, source and event count are fixed; AC9AMUFD01. Prepare: D spreading track, Practice D.
- Welcome · 3 min. Use four fictional paper-garden icons or a plain score. These are music marks, not a safety signal or instruction to travel.
- Model · 4 min. Place S, M, L between four identical dots. Contrast first short gap with last long gap, and leave the earlier gathering track out of view.
- Try together · 5 min. Child locates gap 1 and gap 3 using text, tactile block count or adult reading; describe only which is longer.
- Child choice · 7 min. Child makes their own spreading timeline for four paper stars or abstract sounds, choosing an intended musical idea in their words.
- Notice · 4 min. Save gap order and child intention; a reader's feelings and actual played spacing remain unknown.
- Close · 2 min. A fresh independent comparison follows.