Low-stakes checks guide next teaching. Keep the educator key away from first responses. Broad fixed LOW/HIGH cards, raised two-level rails, direction cards, drawing, pointing, AAC, neutral reading/scribing and pass are available. No device, hearing, singing, movement, real scene or audience is required. Optional locally approved sound follows an independent score response and is observed separately.
Check S · three joins
Day 65. S A4 SVG · S A4 PDF · exact text/tactile route. This new four-place score reads HIGH LOW LOW HIGH. At the three joins, compare place 1 with 2, 2 with 3, and 3 with 4. For each join, choose SAME, UP, or DOWN in that order. Show the complete three-card reader key or an equivalent child-explained path. These are relative pitch labels, not a request to sing or change volume.
Save first: ordered three joins, which pairs were compared, explanation and response route. Do not model the direction answer before saving. A correct picture does not show aural pitch recognition.
Check T · change the last pitch
Day 70. T A4 SVG · T A4 PDF · exact text/tactile route. New source: HIGH LOW HIGH HIGH at numbered places 1–4. Keep places 1, 2 and 3 exactly. In a second version, change place 4 from HIGH to LOW. Show all four pitch labels in the revised version, point to the one changed place, then choose SAME, UP or DOWN for the new join from 3 to 4. No one must produce the tones.
Save first: complete revised four-place score, one changed place, final-join direction, explanation and route. A paper revision cannot prove heard, played or shared music.