Bounds
All described events are original supplied fiction. No local experiment, child success, measurement, reader hearing ability or annual attainment is supplied.
Child invitation
Keep both reports without choosing a hearing winner.
Different child try
Child chooses an unrelated everyday job and writes/draws one source/action clue plus one unknown. Do not copy the ordinary worked sentence; keep any actual event distinct.
Materials
Full printed/readable source, blank paper guide and optional exact scribing/AAC; no required device/audio/material purchase.
Next teaching
If unsure treated as wrong, use unrelated temperature-preference story: one person says warm, another unsure; no readings exist. Model preserving both accounts and what a measurement would need, then child revisits fresh sound reports.
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
Keep M and N words in their own attributed places; unsure is a report.
Whole original context source and possible worked
C13 fictional toy train briefing: same described gentle lid event, observerM reports “soft tap”; observerN reports “not sure what I heard”. Positions are not supplied. Possible: “M reported soft; N was unsure. The notes do not settle why. A visual start card gives another choice without assuming louder is better.”