# Mathematics – Multi-age – Year A – Unit 14

This two-week unit develops student knowledge, understanding and skills of measurement.

Mathematics K-2 Syllabus © 2022 NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales.

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.

### Early Stage 1

##### Representing whole numbers – MAO-WM-01, MAE-RWN-01, MA1-RWN-01, MA1-RWN-02
• 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, MA1-CSQ-01
• 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, MA1-FG-01
• Copy, continue and create patterns
• Investigate and form equal groups by sharing
##### Geometric measure – MAO-WM-01, MAE-GM-01, MA1-GM-01, MAE-GM-02, MA1-GM-02, MAE-GM-03, MA1-GM-03
• Length: use direct and indirect comparisons to decide which is longer
##### Two-dimensional spatial structure – MAO-WM-01, MAE-2DS-01, MA1-2DS-01, MAE-2DS-02, MA1-2DS-02
• Represent shapes
• Identify and compare area
##### Three-dimensional spatial structure – MAO-WM-01, MAE-3DS-01, MA1-3DS-01, MAE-3DS-02, MA1-3DS-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, MA1-NSM-01, MAE-NSM-02, MA1-NSM-02
• Mass: Identify and compare mass using weight

### Stage 1

##### Representing whole numbers A
• Use counting sequences of ones with two-digit numbers and beyond
• Represent numbers on a line
• Represent the structure of groups of ten in whole numbers
##### Representing whole numbers B
• Use counting sequences of ones and tens flexibly
• Form, regroup, and rename three-digit numbers
##### Forming groups B
• Represent and explain multiplication as the combining of equal groups
##### Geometric measure A
• Length: Measure the lengths of objects using uniform informal units
• Length: Compare lengths using uniform informal units
##### Geometric measure B
• Length: Compare and order lengths, using appropriate uniform informal units
##### Two-dimensional spatial structure A
• 2D shapes: Recognise and classify shapes using obvious features
• Area: Measure areas using uniform informal units
##### Two-dimensional spatial structure B
• Area: Compare rectangular areas using uniform square units of an appropriate size in rows and columns
##### Three-dimensional spatial structure A
• 3D objects: Recognise familiar three-dimensional objects
• Volume: Measure and compare the internal volumes (capacities) of containers by filling
• Volume: Compare containers based on internal volume (capacity) by filling and packing
##### Three-dimensional spatial structure B
• Volume: Compare containers based on internal volume (capacity) by filling and packing
• Volume: Compare volumes using uniform informal units
##### Non-spatial measure A
• Mass: Investigate mass using an equal arm-balance
##### Non-spatial measure B
• Mass: Compare the masses of objects using an equal-arm balance