Goal: recognise that one broad card with a broad layer has at least two verified parts if actually assembled, while a paper label alone cannot verify material. Proposed codes: AC9SFU03, AC9SFI01, AC9SFI05. Prepare: Model L, layer-compare, optional approved large clean card/layer, Card 76.
- Source · 3 min. Label L FICTIONAL MODEL. Adult may separately show an intact verified broad card and safe broad layer with no tap; if unavailable, use paper only.
- Read · 4 min. Read L fully: A CARD outline; B same outline with a striped LAYER; no actual response is supplied.
- Model · 5 min. Teacher says “This drawing labels two parts. Only a real verified object lets us describe its actual material composition.”
- Child try · 7 min. Card 76 routes identify A/B parts, source and unknown, or record verified real card + layer if actually examined safely.
- Check · 4 min. Ask if the striped drawing proves fabric, softness or quietness. Child distinguishes labels/appearance from verified observed properties.
- Exit · 2 min. State one question for an optional safe single-action comparison, not a sound result.