# Choose a useful next try

Take 20 safe pieces or make 20 marks, or choose a smaller manageable amount. Use two or three spots to organise a job you actually want to do. Show each part; change the split while keeping the same collection. Point, say, sign or direct the moves. No return/photo is needed.

Try one small check: how do the parts account for your whole? If an empty spot is useful, it has zero. You may stop or finish privately.

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An ordinary example is 5 + 15 = 20. Show its reasoning only after the first own attempt if useful. This is a supplied model, not your household's stock. [Full plan](../teacher/day-50.md). Choose the next teaching by the missing component: coverage, unit value, replacement, changed parts, or justified keep/repair. Use a different small example and then a new case, not the same memorised answer. An adult can move under the child's direction; record a maths hint separately from reading or physical access. Home return is optional and is not a learning criterion.

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Original SubjectNest teaching and drawings © NeuroForgeIO Pty Ltd 2026, [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/). Credit SubjectNest by NeuroForgeIO Pty Ltd, version 0.1.0, source and licence; note changes. Curriculum and provider rights remain separate.