Job: connect an actual source/blocker/screen to the chosen idea. Ready: same approved setup or light-parts exact description. Say: “Where does the light start?”
- 0–3: Restore only a wanted available idea; otherwise choose a fresh imaginary window/shape. Identify actual roles and comfortable source access.
- 3–8: Offer another short actual shadow look before labels. Let the learner identify the emitting source in the actual setup; a pale receiving screen or mirror can reflect light without emitting it. A glowing display may itself emit light; identify the actual object and source. If switching is safe and useful, an adult may briefly change only the lamp state while preserving comfortable room light. Switching is optional, never a required child action.
- 8–12: Use the light-parts aid to label this source, blocker and screen. An unlit torch drawing alone does not tell us whether the real torch was on. Name other available light when it affects the view; keep observation and explanation distinct.
- 12–20: The learner chooses a clearer position/view or a different suitable receiving surface for their shadow job. Predict what that might help show, then optionally try. If two things change, name both; this exploratory try need not be called a fair comparison.
- 20–25: Invite one source explanation in the learner's usual mode. Record the actual choice/reason/help; keep “source unclear” where appropriate. Next: make a model of the path, not a copied actual measurement.