Target/codes: independently identify which unfamiliar four-event track spreads and which stays steady, with first/last gap evidence; AC9AMUFD01. Prepare: public Gap 1, A4 check, fixed tactile blocks; educator key closed.
- Welcome · 3 min. Present a new paper music puzzle after any integrated held-out English/maths checks. No sound or speed requirement.
- Access · 4 min. Read the public tracks neutrally: A has S–M–L gaps; B has M–M–M. Each has four identical L/V/A event marks. Do not supply pattern names.
- Independent plan · 5 min. Child compares gap 1, 2 and 3 in each track via print, raised blocks or adult reading.
- Child response · 7 min. Save first answer: which spreads, which is steady, the first and last gap in the spreading track, one feature held constant, and one thing paper cannot tell about a real performance/listener.
- Self-check · 4 min. Child rereads both tracks without feedback or answer cues.
- Close · 2 min. Consult private key afterward; offer only different after-check tracks for practice.