Target/codes: independently transform the second of two identical unfamiliar phrases by combining its first two short events into one LONG, retaining its rest and final X; AC9AMUFD01, AC9AMUFC01. Prepare: N public check, N A4, broad fixed cards; keep key closed.
- Welcome · 3 min. Say the new paper music puzzle will guide next teaching; no one needs to play a held sound.
- Access · 4 min. Present two matching phrases S =
X X – X / X X – Xby print, tactile cells or neutral read-aloud. Do not show a LONG answer band yet. - Independent plan · 5 min. Child keeps phrase 1, and in phrase 2 replaces only its first two short X with one LONG spanning local counts 1–2; rest 3 and X4 stay.
- Child response · 7 min. Save first full two-phrase score, location of held band and explanation that the second phrase now has fewer sound events. Optional sound follows independently.
- Self-check · 4 min. Child traces the four numbered places in each phrase and checks phrase 1 unchanged, without receiving an answer hint.
- Close · 2 min. Consult the separate key; arrange later authorised real music and observed accessible sound-making where still needed.