AC9M3A02
Algebra > Addition and Subtraction
Australian Curriculum Version 9 Says:
Extend and apply knowledge of addition and subtraction facts to 20 to develop efficient mental strategies for computation with larger numbers without a calculator.
What this means
Students use basic addition and subtraction facts.
- Extend; e.g., 7 + 7 extends to 17 + 7 and then 70 + 70, etc.
- Knowledge; use a bank of known addition facts to generate the related subtraction facts. Part-part whole thinking (diagrams) will help.
- Efficient mental strategies; the strategy used does not tax short-term working memory. Counting in ones more than three is inefficient.
Interactives & Downloadables
Resources & Manipulatives
-
Bond Blocks Core Addition & Subtraction Kit
$2,288.00 inc. GST -
COMBO (12 Pack)
$72.00 inc. GST -
COMBO (8 Pack)
$48.00 inc. GST -
Take Sum Risks
$13.50 inc. GST -
Games to Play Using COMBO
$11.00 inc. GST -
COMBO (Individual Pack)
$6.90 inc. GST
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.