# Multi-age K–2, mathematics, Year A – Unit 14

Develop students' knowledge, understanding and skills of measurement in this two-week, multi-age sample unit – What needs to be measured determines the unit of measure.

Students are provided opportunities to:

- compare, order and match using direct comparison and informal units of measurement
- estimate whether a measurement is reasonable
- consider how selection of measuring unit affects accuracy – Stage 1 students
- explore conservation of length, area, volume and mass.

## Syllabus focus and content groups

**Representing whole numbers – MAO-WM-01, MAE-RWN-01**

- Instantly name the number of objects within small collections
- Use the counting sequence of ones flexibly
- Connect counting and numerals to quantities

**Combining and separating quantities – MAO-WM-01, MAE-CSQ-01, MAE-CSQ-02**

- Model additive relations and compare quantities
- Identify part–whole relationships in numbers up to 10

**Forming groups – MAO-WM-01, MAE-FG-01, MAE-FG-02**

- Copy, continue and create patterns
- Investigate and form equal groups by sharing

**Geometric measure – MAO-WM-01, MAE-GM-01, MAE-GM-02, MAE-GM-03**

Length: use direct and indirect comparisons to decide which is longer

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

- Represent shapes
- Identify and compare area

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

- Volume – explore familiar three-dimensional objects
- Volume – compare internal volume by filling and packing
- Volume – compare volume by building

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

Mass: Identify and compare mass using weight

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

- Part A – Use counting sequences of ones with two-digit numbers and beyond
- Part A – Represent numbers on a line
- Part A – Represent the structure of groups of ten in whole numbers
- Part B – Use counting sequences of ones and tens flexibly
- Part B – Form, regroup, and rename three-digit numbers

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

Part A – Use advanced count-by-one strategies to solve addition and subtraction problems

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

Part B – Represent and explain multiplication as the combining of equal groups

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

- Part A – Length: Measure the lengths of objects using uniform informal units
- Part A – Length: Compare lengths using uniform informal units
- Part B –Length: Compare and order lengths, using appropriate uniform informal units

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

- Part A – 2D shapes: Recognise and classify shapes using obvious features
- Part A – Area: Measure areas using uniform informal units
- Part B – Area: Compare rectangular areas using uniform square units of an appropriate size in rows and columns

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

- Part A – 3D objects: Recognise familiar three-dimensional objects
- Part A – Volume: Measure and compare the internal volumes (capacities) of containers by filling
- Part A – Volume: Compare containers based on internal volume (capacity) by filling and packing
- Part B – Volume: Compare containers based on internal volume (capacity) by filling and packing
- Part B – Volume: Compare volumes using uniform informal units

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

- Part A – Mass: Investigate mass using an equal arm-balance
- Part B – Mass: Compare the masses of objects using an equal-arm balance

## Syllabus

Syllabus outcomes and content descriptors from the 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.