Target/codes: independently transform unfamiliar V in the reply, preserving three specified cells, and change an abstract source label; AC9AMUFD01, AC9AMUFC01. Prepare: public P brief, P A4, broad role/source cards; close key.
- Welcome · 3 min. Introduce a new paper score puzzle to plan later teaching. It does not need a sound source or audience.
- Access · 4 min. Show V = X X X REST first, and V again in the reply. Both starting source labels are circles. Brief: keep first V and its circle; in second V replace only local X1 with REST, keep 2–4, and change its source label from circle to triangle.
- Independent plan · 5 min. Child considers the full two-phrase sequence and both source symbols with no model of the answer.
- Child response · 7 min. Save first complete response by cards, drawing, AAC, pointing or neutral adult scribing, plus changed-cell and source explanation.
- Self-check · 4 min. Child traces two groups of four, unchanged first V and one changed reply cell. No answer hint before first response is saved.
- Close · 2 min. Use separate key for next steps. Actual hearing, playing and genuine sharing remain separately evidenced.