# Stage 1, mathematics, Year B – Unit 23

What needs to be measured determines the unit of measurement – this unit develops student knowledge, understanding and skills of measurement.

In this unit, students will learn to:

• measure, record, compare and estimate a variety of attributes including length, area, volume, and mass using informal and formal units
• explore and connect mathematical measurement concepts
• apply mathematical measurement techniques to solve problems and communicate their thinking.

### Syllabus focus and content groups

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

• Use counting sequences of ones with two-digit numbers and beyond
• Continue and create number patterns
• Represent the structure of groups of ten in whole numbers
• Represent numbers on a line

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

Use counting sequences of ones and tens flexibly

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

• Use flexible strategies to solve addition and subtraction problems

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

Represent and explain multiplication as the combining of equal groups

Geometric measure A – MAO-WM-01, MA1-GM-01, MA1-GM-02, MA1-GM-03

Length: Compare lengths using uniform informal units

Geometric measure B – MAO-WM-01, MA1-GM-01, MA1-GM-02, MA1-GM-03

• Length: Compare and order lengths, using appropriate uniform informal units
• Length: Recognise and use formal units to measure the lengths of objects

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

• Area: Indirectly compare area
• Area: Measure areas using uniform informal units

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

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, MA1-3DS-02

Volume: Measure and compare the internal volumes (capacities) of containers by filling

Three-dimensional spatial structure B – MAO-WM-01, MA1-3DS-01, MA1-3DS-02

Volume: Compare containers based on internal volume (capacity) by filling and packing

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

Mass: Investigate mass using an equal-arm balance

## 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.

Category:

• Geometric measure
• Mathematics (2022)
• Non-spatial measure
• Representing whole numbers
• Stage 1
• Three-dimensional spatial structure
• Two-dimensional spatial structure
• Unit