Close message Scootle will stop supporting resources that use the Adobe Flash plug-in from 18 Dec 2020. Learning paths that include these resources will have alerts to notify teachers and students that one or more of the resources will be unavailable. Click here for more info.

TLF ID L96

This tutorial is suitable for use with a screen reader. It explains strategies for solving addition sums in your head such as 22+49. Work through sample questions and instructions explaining how to use linear partitioning techniques. Solve addition sums by breaking them up into parts that are easy to work with, work out each part and then solve the original calculation. This learning object is one in a series of five objects.

#### Educational details

Key learning objectives
• Students explore strategies for adding mentally.
• Students investigate a linear model as an aid to adding mentally.
Educational value
• Provides explanations in support of the development of mental strategies to simplify and solve addition problems.
• Covers ‘tens and ones’, ‘doubling’, ‘making tens’ and ‘compensate’ strategies.
• Can be used with a screen reader.
Year level

4; 5

Learning area
• mathematics
Strand
• Mathematics/Number and algebra
Concept
• Mathematics/Counting strategies
• Mathematics/Whole numbers
• Mathematics/Number patterns
• Mathematics/Number relationships
• Mathematics/Mental arithmetic
• Mathematics/Algorithms
Skill
• Analysis;
• Application;
• Comprehension;
• Knowledge
Student activity
• Interactives;
• Analysis;
• Experiment;
• Modelling
Learning design
• Independent learning;
• Experiential learning;
• Problem solving;
• Visual learning

#### Other details

Contributors
• Technical implementer
• Subject matter expert
• Publisher
• Date of contribution: 20 Sep 2013
• Organisation: Education Services Australia
• Address: Melbourne VIC 3000 Australia
• URL: http://www.esa.edu.au/
Access profile
• Colour independence
• Device independence
• Hearing independence
• Visual independence
Learning resource type
• Interactive Resource
Browsers
• Microsoft Internet Explorer - minimum version: 8.0 (MS-Windows) - maximum version: 9.0 (MS-Windows)
• Firefox - minimum version: (MS-Windows)
• Safari - minimum version: 5.1 (MacOS)
Operating systems
• MacOS - minimum version: 10.6
• MS-Windows - minimum version: XP - maximum version: 7
Rights
• © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.