Teacher copy: This page may include teaching prompts or answer keys. Answer keys in this public library can be viewed by anyone. Give learners a clean prompt, use checks as formative evidence, and change a case locally when prior access matters.
Organise three stages of a picture. Use 21 safe pieces or original marks. A supplied ordinary teaching account is 10 + 7 + 4 = 21; inspect its members, then choose another valid split of the same whole. A job may suit unequal parts.
Show what each part contains.
Check that every object has one place.
Choose a split that suits this job. Show a reason and a possible revision.
Grown-up help
[Full daily plan](../teacher/day-47.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 the third part is omitted, put every object in one of three distinct places and audit coverage. If fairness distracts from the target, choose three jobs that deliberately need different amounts.
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Source: https://neuroforge.io/subjectnest/library/resources/year-1/mathematics/term-1/weeks-09-10/choices/day-47-route-1-markdown · SubjectNest by NeuroForgeIO Pty Ltd · Keep the complete source and licence companions; item rights remain separate.