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Mathematics / Year 2 / Number and Algebra / Number and place value

Curriculum content descriptions

Explore the connection between addition and subtraction (ACMNA029)

Elaborations
  • becoming fluent with partitioning numbers to understand the connection between addition and subtraction
  • using counting on to identify the missing element in an additive problem
General capabilities
  • Numeracy Numeracy
ScOT terms

Subtraction,  Addition

Downloadable

Algebra: Foundation to Year 9

This comprehensive resource describes the progression of algebra-related ideas and algebraic thinking. The resource demonstrates examples of relevant teaching strategies, investigations, activity plans and connected concepts in algebra including teaching and cultural implications.

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There are many different situations where addition, subtraction, multiplication and division can be used: K–2 Year B – Unit 16

This two-week unit develops student knowledge and skills in understanding different situations where addition, subtraction, multiplication and division can be used. Students are provided opportunities to investigate the four operations through problem solving; explore the relationship between different operations and inverse ...

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Making and using equal groups: K–2 Year B – Unit 13

This sample multi-age unit develops student knowledge, understanding and skills of making and using equal groups. Students are provided opportunities to: recognise, model and use equal and unequal groups; share collections by forming equal groups; use arrangements to distinguish between the number of groups and the number ...

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Problems can be solved and represented in different ways: K–2 Year B – Unit 20

This two-week unit develops student knowledge, understanding and skills to solve mathematical problems using critical and strategic thinking.

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Collections of objects can be changed by adding more (combining) or taking some away (separating): K–2 Year B – Unit 9

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

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Equal means equivalent: K–2 Year B – Unit 6

This sample multi–age unit continues to explore the big idea 'equal means equivalent'.

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Collections of ten are really useful: K–2 Year B – Unit 1

This two-week unit introduces students to the big idea that collections of 10 are useful.

Interactive

Sites2See: Patterns and Algebra

Selected links to a range of interactive online resources for the study of patterns and algebra in Foundation to Year 6 Mathematics.

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Situations where addition, subtraction, multiplication and division can be used: K–2 Year A – Unit 16

This two-week unit provides students with opportunities to explore different situations where you can use addition, subtraction, multiplication, and division.

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Sometimes things move and change location: K–2 Year A – Unit 10

This unit develops understanding and skills of position and chance.

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Collections of ten are really useful: K–2 Year A – Unit 11

This sample unit provides further develops students' knowledge, understanding and skills of place value and number representation.

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Equal means equivalent: K–2 Year A – Unit 6

This sample multi-age unit explores the big idea 'equal means equivalent'.

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Problems can be solved and represented in different ways: K–2 Year A – Unit 20

This two-week unit develops student knowledge, understanding and skills that problems can be solved and represented in different ways.

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Smaller numbers can be found hiding in bigger numbers: K–2 Year A – Unit 4

Smaller numbers can be found hiding in bigger numbers – develops student knowledge, understanding and skills in using combinations of numbers.

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Collections of objects can be changed: K–2 Year A – Unit 9

This two-week unit develops student knowledge, understanding, and skills of combining and separating quantities.

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See & Say - Calculate

This class warm-up game focuses on practising addition and subtraction strategies and developing algebraic thinking by using a rule applied to a list of numbers.

Online

TIMES Module 2: Number and Algebra: addition and subtraction - teacher guide

This is a 29-page guide for teachers. The module introduces addition and subtraction of whole numbers.

Online

Literacy and numeracy improvement: a whole-school approach

This teacher resource describes how 74 public schools in metropolitan, regional and rural Western Australia used three major components of the school improvement cycle to achieve significant improvement in the literacy and numeracy learning outcomes of their students. The resource is organised in nine sections: Summary, ...

Interactive

Number frames, by the Math Learning Centre - iTunes app

Addition and subtraction using an interactive bread frame. Encourages the use of different strategies to solve addition and subtraction problems. Drawing tools enables students to annotate work to show their understanding. Write equations with the text tool. Free when reviewed on 12/5/2015.