# 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

### Early Stage 1

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

### Stage 1

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.

Category:

• Combining and separating quantities
• Geometric measure
• K-2
• Mathematics (2022)
• Non-spatial measure
• Representing whole numbers
• Three-dimensional spatial structure
• Two-dimensional spatial structure
• Unit