D-later-3 · a different next offer
complete unrelated original ordinary teaching; not a held-source rehearsal, model student or observed result
Whole ordinary source
Fictional concert-story pair: A programme lists a humming scene and a silent-drawing scene. A later note cancels the humming scene. It gives no replacement or silent-drawing result.
Own invitation before modelling
Ask one useful question the pair leaves open.
Usual communication, drawing/directed layout, faithful scribing, private/pass/rest/return are available. Keep actual first words and help; no learner result is supplied.
Grown-up model and full teaching moves
Was a replacement planned? or Did the silent-drawing scene run? is a relevant missing detail, not a reported event.
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Keep an own question before a model.
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Show how an unanswered question comes from a particular gap in the two sources.
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Invite a different own question and keep its answer blank until evidence exists; no performance or hearing task required.
Next notice: The own question is specific to an unreported result or update.