Stage 1, mathematics, Year A – Unit 09

This sample Stage 1 unit explores the big idea of combining and separating quantities.

In this unit, 'Collections of objects can be changed by adding more (combining) or taking some away (separating)', students are provided with opportunities to:

• represent combining situations in different ways through the use of gesture, enactment, drawings, numbers, and words
• use symbols to describe mathematical quantities, actions, and relationships in efficient ways
• understand that the order in which 2 quantities are combined does not change the result.

Syllabus focus and content groups

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

• Use counting sequences of ones with two-digit numbers and beyond
• Continue and create number patterns
• Represent numbers on a line

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

• Use flexible strategies to solve addition and subtraction problems
• Represent equality

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

• Use knowledge of equality to solve related problems

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

• Count in multiples using rhythmic and skip counting
• Model and use equal groups of objects to represent multiplication

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

Represent and explain multiplication as the combining of equal groups

Non-spatial measure A– MAO-WM-01, MA1-NSM-01

Mass: Investigate mass using an equal-arm balance

Non-spatial measure B– MAO-WM-01, MA1-NSM-01

Mass: Compare the masses of objects using an equal-arm balance

Syllabus

Syllabus outcomes and content descriptors from 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
• Forming groups
• Mathematics (2022)
• Non-spatial measure
• Representing whole numbers
• Stage 1
• Unit