# Mathematics – Multi-age – Year A – Unit 13

This two-week unit introduces students to making and using equal groups.

Mathematics K-2 Syllabus © 2021 NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales.

In this unit students will learn to:

• model and use equal groups of objects to represent multiplication
• use arrays to distinguish between the number of groups and the number in each group when describing collections of objects
• solve multiplication and division problems using objects, diagrams, images and actions.

### Early Stage 1

##### Representing whole numbers – MAO-WM-01, MAE-RWN-01, MAE-RWN-01, MAE-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, MA1-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, MA1-FG-01
• Record grouping and sharing
##### Two-dimensional spatial structure – MAO-WM-01, MAE-2DS-01, MA1-2DS-01, MAE-2DS-02, MA1-2DS-02
• 2D shapes: Sort, describe and name familiar shapes
• 2D shapes: Represent shapes
• Area: Identify and compare area
##### Three-dimensional spatial structure – MAO-WM-01, MAE-3DS-01, MA1-3DS-01, MAE-3DS-02, MA1-3DS-02
• 3D objects: Explore familiar three-dimensional objects
• 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
##### Data– MAO-WM-01, MAE-DATA-01
• Organise objects into simple data displays and interpret the displays

### Stage 1

##### Representing whole numbers A –
• Use counting sequences of ones with two-digit numbers and beyond
• Represent the structure of groups of ten in whole numbers
##### Combining and separating quantities A –
• Use flexible strategies to solve addition and subtraction problems
• Represent equality
##### Forming groups A –
• Count in multiples using rhythmic and skip counting
• Use skip counting patterns
• Model and use equal groups of objects to represent multiplication
• Recognise and represent division
##### Forming groups B –
• Represent and explain multiplication as the combining of equal groups
• Represent multiplication and division problems
##### 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 –
• 2D shapes: Represent, combine and separate two-dimensional shapes
• 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
• 3D objects: Sort and describe three-dimensional objects
• Volume: Construct volumes using cubes
##### Three-dimensional spatial structure B –
• Volume: Compare volumes using uniform informal units
##### Non-spatial measure A –
• Mass: Investigate mass using an equal arm-balance