# Split it, keep the same amount

Year 1 Mathematics · Resource Weeks 09–10 · Days 41–50 · version 0.1.0 · 9 October 2026.

Take nine safe pieces or make nine marks. Put some in a use-now place and the rest in a save-later place. Count each part. Change the split. Have you still accounted for the same nine?

- [Choose today's lesson](TEACHER-SELECT.md).
- [Make your own split in Part Builder](workspace/index.html), or use the [paper twin](PAPER.md).
- [Find original models and empty own spaces](AIDS.md).
- [Choose a short family offer](HOME.md).

Each child can use suitable materials, drawings, tactile pieces, selected numerals, speech, sign, AAC or direct an adult's marks/moves. Choose a modest useful amount. Your first idea and the help given stay visible before a new example.

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These ten 25-minute maths components continue published Days 1–40. They teach flexible one-/two-digit partitioning, including tens and ones. The [teacher guide](TEACHER-GUIDE.md), [curriculum scope](CURRICULUM-CROSSWALK.md) and [rights/source note](SOURCE-AND-RIGHTS.md) explain exact limits. Resource numbering and the term-1 storage folder do not promise particular school term dates. Choose local scheduling and safe materials. A whole-year judgement belongs to the school's broader program and evidence.

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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.