Check a pretend board-game collection of 33 marks. One writer proposes 20 + 12. Keep the stated whole while deciding what to do with the note.
- Ask the helper to make or show the 33 members without marking the proposal right or wrong.
- Direct a one-to-one inspection of the proposed parts. Are all the stated members accounted for exactly once?
- Give your detective's decision: keep or fix the parts, with a reason from the members. Do not change the whole just to make the note fit.
- Tell the writer how to check your decision. If you want, direct a different valid account of these same members; a tidy note alone is not a check.
Point, speak, sign, use AAC or tell a helper where to put the marks. A quiet private try or pause is fine. No photo, returned homework, purchase or independent drawing/moving is needed.
Grown-up help
**Retained ordinary model.** 20 + 13 = 33. Give a model only when useful after the child's first thinking; it is not an independently found response. **Director route.** Follow the child's words/signs/AAC choices faithfully; neutral reading and physical operation are different from a maths hint. Use a smaller honest actual amount or pause privately if needed. Below-ten practice cannot establish a full-ten exchange. A narrated proposed move is not an observed physical move. [Full daily plan](../teacher/day-48.md) gives today's exact reasoning and next instruction. This is an ordinary practice model, not a reserved fresh answer. If the total is too large, choose and label a smaller actual collection while keeping the partition purpose. Adult movement follows the child's decisions. Supplied counts are support, not evidence of independently finding that count. 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.Original SubjectNest teaching and drawings © NeuroForgeIO Pty Ltd 2026, CC BY 4.0. Credit SubjectNest by NeuroForgeIO Pty Ltd, version 0.1.0, source and licence; note changes. Curriculum and provider rights remain separate.