Multi-age K–2, mathematics, Year B – Unit 09

This unit develops understanding and skills of forming groups and combining and separating.

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.

In this unit students will learn to:

  • choose and evaluate strategies to combine, separate, and form groups
  • use concrete materials, drawings, words, numerals and/or symbols to describe and explain mathematical operations
  • understand that the order in which 2 quantities are combined does not change the result
  • explore the inverse relation between addition and subtraction (Stage 1)
  • apply knowledge of related facts (number combinations to 10 and/or 20)
  • use repeated addition to solve multiplication problems.

Syllabus focus and content groups

Representing whole numbers – 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
  • Recognise number patterns
  • 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
  • Record grouping and sharing

Data – MAO-WM-01, MAE-DATA-01

Organise objects into simple data displays and interpret the displays

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 – Continue and create number patterns
  • 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, MA1-CSQ-02

  • Part A – Use advanced count-by-one strategies to solve addition and subtraction problems
  • Part A – Recognise and recall number bonds up to ten
  • Part A – Use flexible strategies to solve addition and subtraction problems
  • Part A – Represent equality
  • Part B – Represent and reason about additive relations
  • Part B – Form multiples of ten when adding and subtracting two-digit numbers
  • Part B – Use knowledge of equality to solve related problems

Forming groups – MAO-WM-01, MA1-FG-01

  • Part A – Count in multiples using rhythmic and skip counting
  • Part A – Use skip counting patterns
  • Part A – Model and use equal groups of objects to represent multiplication
  • Part A – Recognise and represent division
  • Part B – Represent and explain multiplication as the combining of equal groups
  • Part B – Model doubling and halving with fractions
  • Part B – Represent multiplication and division problems

Data – MAO-WM-01, MA1-DATA-01, MA1-DATA-02

  • Part A – Ask questions and gather data
  • Part A – Represent data with objects and drawings and describe the displays

Category:

  • Combining and separating quantities
  • Forming groups
  • K-2
  • Mathematics (2022)
  • Representing whole numbers
  • Unit

Business Unit:

  • Curriculum and Reform
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