# Mathematics – Multi-age – Year A – Unit 1

Collections of ten are really useful – develops student knowledge, understanding, and skills of place value and working with collections of ten for mathematical thinking.

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:

• recognise, classify, and sort shapes using obvious features
• visualise, play with, and investigate the base 10 numerical system
• ask questions, gather, and represent data with objects and drawings.

### Early Stage 1

##### Representing whole numbers A – MAO-WM-01, MAE-RWN-01, MAE-RWN-02
• Instantly name the number of objects within small collections
• Use the counting sequence of ones flexibly
• Represent the structure of groups of ten in whole numbers
##### 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
• Recognise and recall number bonds up to ten
• Use flexible strategies to solve addition and subtraction problems
• Represent equality
• Form multiples of ten when adding and subtracting two-digit numbers
• Use knowledge of equality to solve related problems
##### Two-dimensional spatial structure – MAO-WM-01, MAE-2DS-01, MAE-2DS-02
• 2D shapes: Sort, describe and name familiar shapes
• 2D shapes: Represent shapes
##### Data– MAO-WM-01, MAE-DATA-01, MAE-DATA-02
• Organise objects into simple data displays and interpret the displays
• Represent data with objects and drawings and describe the displays
• Create displays of data and interpret them

### Stage 1

##### Representing whole numbers A – MA1-WM-01, MA1-RWN-01, MA1-RWN-02
• Use the counting sequence of ones flexibly
• Represent the structure of groups of ten in whole numbers
• Use counting sequences of ones with two-digit numbers and beyond
##### Combining and separating quantities – MA1-WM-01, MA1-CSQ-01, MA1-CSQ-02
• Identify part–whole relationships in numbers up to 10
• Recognise and recall number bonds up to ten
• Use advanced count-by-one strategies to solve addition and subtraction problems
• Use flexible strategies to solve addition and subtraction problems
• Represent equality
• Represent and reason about additive relations
• Form multiples of ten when adding and subtracting two-digit numbers
• Use knowledge of equality to solve related problems
##### Two-dimensional spatial structure – MA1-WM-01, MA1-2DS-01, MA1-2DS-02
• 2D shapes: Represent shapes
• 2D shapes: Recognise and classify shapes using obvious features
• 2D shapes: Represent, combine and separate two-dimensional shapes
##### Data– MA1-WM-01, MA1-DATA-01, MA1-DATA-02
• Ask questions and gather data
• Represent data with objects and drawings and describe the displays
• Create displays of data and interpret them
• Identify a question of interest and gather relevant data