Plan two jobs for 30 picture marks. Choose a pretend maker's wish: ‘I want a big start picture’ or ‘I want plenty saved for my ending.’ These are invented requests, not everybody's needs.
- Tell a helper which request you choose and name the two useful parts.
- Direct how the waiting marks join those parts, with each member counted once. Explain your choice for that particular request.
- Ask, ‘What if the maker chose the other request?’ Propose or enact a changed split of these same 30 marks.
- Compare the two accounts. Both must fit the whole; keep the one that suits your chosen job and say why. A planned picture is not a finished craft.
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.** 10 + 20 = 30. 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-49.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 a plan is copied, offer a blank organiser and a new modest collection. If the reason ignores the job, name one need and compare two valid splits. If a part is uncertain, return to countable members.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.