# Stage 1, mathematics, Year A – Unit 13

This sample Stage 1 unit introduces students to making and using equal groups.

Students are provided with opportunities to:

- model and use equal groups of objects to represent multiplication
- use arrays to distinguish between the number of groups and the number in each group when describing collections of objects
- solve multiplication and division problems using objects, diagrams, images, and actions.

**Representing whole numbers A – MAO-WM-01, MA1-RWN-01, MA1-RWN-02**

- Use counting sequences of ones with two-digit numbers and beyond
- Represent the structure of groups of ten in whole numbers

**Combining and separating quantities A – MAO-WM-01, MA1-CSQ-01**

- Use advanced count-by-one strategies to solve addition and subtraction problems
- Represent equality

**Forming groups A – MAO-WM-01, MA1-FG-01**

- Count in multiples using rhythmic and skip counting
- Use skip counting patterns
- Model and use equal groups of objects to represent multiplication
- Recognise and represent division

**Forming groups B – MAO-WM-01, MA1-FG-01**

- Represent and explain multiplication as the combining of equal groups
- Represent multiplication and division problems

**Non-spatial measure A – MAO-WM-01, MA1-NSM-01, MA1-NSM-02**

Mass: Investigate mass using an equal-arm balance

**Two-dimensional spatial structure A – MAO-WM-01, MA1-2DS-01, MA1-2DS-02**

- Area: Measure areas using uniform informal units
- 2D shapes: Recognise and classify shapes using obvious features

**Two-dimensional spatial structure B – MAO-WM-01, MA1-2DS-01, MA1-2DS-02**

- 2D shapes: Represent, combine and separate two-dimensional shapes
- Area: Compare rectangular areas using uniform square units of an appropriate size in rows and columns

**Three-dimensional spatial structure A– MAO-WM-01, MA1-3DS-01**

- 2D shapes: Represent, combine and separate two-dimensional shapes
- Area: Compare rectangular areas using uniform square units of an appropriate size in rows and columns

**Three-dimensional spatial structure B– MAO-WM-01, MA1-3DS-01**

Volume: Compare volumes using uniform informal units

## Syllabus

Syllabus outcomes and content descriptors from Mathematics K–10 Syllabus (2022) © NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales, 2024.