Goal: ask whether a specific approved layer lets a large symbol remain visible under stated conditions and predict before testing. Proposed codes: AC9SFU03, AC9SFI01, AC9SFI02. Prepare: large filled-circle card, one adult-preflighted broad rigid panel, stable desk, layer-test mat, Model H, Card 26.
- Safety/source · 3 min. Check panel edges, verified material or UNKNOWN, same room light, distance and no face covering. No bright torch or Sun viewing.
- Purpose · 4 min. Explain a fictional classroom choice: should a sign be visible through a cover, or hidden for a guessing game? Both are purposes; no child privacy disclosure is requested.
- Model · 5 min. Read Model H1/H2: drawn circles and panel words do not prove real see-through properties. Teacher asks a testable question for the actual approved panel.
- Child try · 7 min. Child uses Card 26 to name exact source/material if verified, pose a visibility question and predict visible/not visible/unsure before an adult-held actual panel trial. Adult records the actual view or NOT TESTED.
- Compare · 4 min. Compare prediction with actual result only if the safe trial occurred; record vision access or ADULT REPORT without upgrading one to the other.
- Exit · 2 min. Name one condition such as distance or lighting that a next comparison should keep the same.