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AC9M1N05

Number > Addition & Subtraction

Australian Curriculum Version 9 Says:

Use mathematical modelling to solve practical problems involving additive situations, including simple money transactions; represent the situations with diagrams, physical and virtual materials, and use calculation strategies to solve the problem.

What this means

Mathematical modelling; Note: the term “mathematical modelling” isn’t the same as the regular “show the students how to do it” meaning of modelling.
In this year level Mathematical modelling requires using materials to help turn an addition or subtraction story into numbers or a number sentence to help solve a story problem with a familiar, real-world basis.
Students might count objects or draw a diagram to help solve the problem.
Calculation strategies: see definition on card AC9M1N04

Tips

  • Part-part-whole diagrams can help to model addition and subtraction problems.
  • See ACARA’s poster

Click on image to Enlarge descriptor card.

Download Full Guide

Resources & Manipulatives

These Quick Curriculum Guides have been designed to take a look at the Australian Mathematics Curriculum (AC9), explain terminology and provide interpretations.

Narelle and I have used our professional judgement to put forward what is appropriate for students at this year level.

Authors: Dr Paul Swan & Narelle Rice
We would like to also thank Linda Marshall and David Dunstan for comments and assistance.

These documents serve as general advice only and do not take into account your specific needs and conditions. While best care has been taken in compiling these materials, mistakes may exist.
Australian Curriculum version 9 materials used under Creative Commons licence from ACARA. Readers should always refer back to the curriculum itself and the state-based curriculum that is relevant for you.

This document is copyright of A-Z Type (Dr Paul Swan). A copy of this document may be downloaded from www.drpaulswan.com.au.