# Multi-age 3–6, mathematics, Year A – Unit 17

This 2-week, Year A unit develops the big idea that multiplicative thinking involves flexible use of multiplication and division concepts, strategies, and representations.

## Syllabus

Syllabus outcomes 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.

Students are provided opportunities to:

- use patterns and array structures to support multiplicative thinking (Stage 2)
- apply knowledge of multiplication to estimate, measure and compare area (Stage 2)
- apply knowledge of multiplication to measure and compare volume using the row, column, layer structure (Stage 2)
- select and apply appropriate strategies to solve multiplication and division problems (Stage 3)
- estimate and measure areas of rectangles and composite shapes using square centimetres and square metres (Stage 3)
- recognise the relationship between the dimensions of a prism and its volume to calculate volumes in cubic centimetres and cubic metres (Stage 3).

## Syllabus outcomes and content groups

**Multiplicative relations A – MAO-WM-01, MA2-MR-01**

- Generate and describe patterns
- Use arrays to establish multiplication facts from multiples of 2 and 4, 5 and 10
- Recall multiplication facts of 2 and 4, 5 and 10 and related division facts

**Two-dimensional spatial structure A – MAO-WM-01, MA2-2DS-01, MA2-2DS-03**

- 2D shapes: Compare and describe features of two-dimensional shapes
- Area: Use square centimetres to measure and estimate the areas of rectangles

**Two-dimensional spatial structure B – MAO-WM-01, MA2-2DS-01, MA2-2DS-03**

- Area: Measure the areas of shapes using the grid structure
- Area: Compare surfaces using familiar metric units of area

**Three-dimensional spatial structure A – MAO-WM-01, MA2-3DS-01**

- 3D objects: Make models of three-dimensional objects to compare and describe key features
- Volume: Compare objects using familiar metric units of volume

**Three-dimensional spatial structure B – MAO-WM-01, MA2-3DS-01**

3D objects: Connect three-dimensional objects and two-dimensional representations

**Multiplicative relations A – MAO-WM-01, MA3-MR-01**

- Determine products and factors
- Use partitioning and place value to multiply 2-, 3- and 4-digit numbers by one-digit numbers
- Use estimation and rounding to check the reasonableness of answers to calculations

**Multiplicative relations B – MAO-WM-01, MA3-MR-01**

Select and apply strategies to solve problems involving multiplication and division with whole numbers

**Geometric measure A – MAO-WM-01, MA3-GM-02**

Length: Measure lengths to find perimeters

**Two-dimensional spatial structure A – MAO-WM-01, MA3-2DS-02**

Area: Calculate the areas of rectangles using familiar metric units

**Two-dimensional spatial structure B – MAO-WM-01, MA3-2DS-02**

Area: Find the area of composite figures

**Three-dimensional spatial structure B – MAO-WM-01, MA3-3DS-02**

- Volume: Use cubic metres for measurement of volume
- Volume: Recognise the multiplicative structure for finding volume
- Volume: Find the volumes of rectangular prisms in cubic centimetres and cubic metres