Bounds
All described events are original supplied fiction. No local experiment, child success, measurement, reader hearing ability or annual attainment is supplied.
Child invitation
Explain what the seen bend does not establish.
Different child try
Offer a new not-yet-tried pretend job chosen by the child. Child names which information would be needed before a result claim; that new result remains genuinely open.
Materials
Full printed/readable source, blank paper guide and optional exact scribing/AAC; no required device/audio/material purchase.
Next teaching
If all motion becomes sound proof, use unrelated wind-up toy source notes: its wheels move but no bell report exists. Ask which extra source would be needed for a bell claim. Return to a different movement model.
Observe
Listen/read/point for the exact source-qualified distinction named in the invitation; record authorship, support and actual/supplied/model mode. A selected label without its meaning does not prove the whole understanding.
Role
ordinary teaching/worked model; never independent held assessment evidence
Teacher moves
Separate source moved from receiver effect; show which source would be needed for each claim.
Whole original context source and possible worked
C08 fictional tabletop note: adult slowly bends cardboard, child sees it move, no sound or receiver was recorded. Ask what the note supports. Possible: “Seen source movement is supplied; an observed receiver effect is not supplied.”