# Australian Curriculum v9 crosswalk · Year 6 mathematics Weeks 3–4

These are **partial content-description links** for ten lessons, not the whole Year 6 mathematics curriculum, an achievement-standard judgement or state/territory approval. The source wording is pinned exactly, apart from plain-text display whitespace. Each taught slice below names the actual task and its limit.

Source: [official ACARA v9 workbook](https://www.australiancurriculum.edu.au/content/dam/en/curriculum/ac-version-9/downloads/curriculum-workbook.xlsx), retrieved 2026-09-29; workbook SHA-256 `db446882d2c00cf7c085a03e250e2442fda6c44011fc114680c46c1dc7a822c3`. Row numbers allow audit against that snapshot.

| Official code | Workbook row | Official level / area | Official content description | Taught slice and limit |
| --- | ---: | --- | --- | --- |
| AC9M6N02 | 17823 | Year 6 / Mathematics | identify and describe the properties of prime, composite and square numbers and use these properties to solve problems and simplify calculations | Days 11–15: factor pairs, prime/composite/square overlap, layout constraints and one regrouped product. This fortnight is a first encounter and does not prove broad mastery of number properties. |
| AC9M6N03 | 17829 | Year 6 / Mathematics | apply knowledge of equivalence to compare, order and represent common fractions including halves, thirds and quarters on the same number line and justify their order | Days 16–20: halves, thirds, quarters and their equivalents on fixed-whole 0–1/0–2 lines, with exact order and reason. Wider fraction operations are in later weeks, not assessed here. |

© Australian Curriculum, Assessment and Reporting Authority (ACARA) 2010 to present, unless otherwise indicated. Downloaded from the Australian Curriculum website (accessed 29 September 2026) and modified for plain-text display. Curriculum material is licensed under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/), subject to [terms and exclusions](https://www.australiancurriculum.edu.au/copyright-and-terms-of-use). ACARA does not endorse SubjectNest; SubjectNest is not affiliated with, sponsored or approved by ACARA.

This is a dated source snapshot, not live synchronisation. Check the current official curriculum and each jurisdiction's implementation before reissue. See [sources, rights and review](SOURCES-AND-REVIEW.md).