# A keep-or-repair note

Make one valid and one faulty claim about a selected whole for a willing checker, or check them yourself. An ordinary starting amount is 35; smaller useful amounts are welcome. Use safe existing pieces, paper marks, tactile materials or direct the moves. Keep or revise your plan with a reason.

[Empty own organiser](../aids/own-parts.svg) · [Complete description](../aids/own-parts-alternative.md).

<details><summary>Grown-up help</summary>

Look for justified verdict and a correction preserving the stated whole when a claim fails. A supplied example is 20 + 15 = 35; choose it as teaching support after an own attempt when useful. If every claim is changed, show a new valid and invalid small pair without error cues. If the reason is only looks wrong, match each claimed object to actual members before changing a label. [Full plan](../teacher/day-48.md). Count supplied versus actual materials separately; child-directed adult acts show mathematical choice without proving motor performance. No viewer, returned homework or fixed quota is required.

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