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Learning objects The difference bar: go figure

TLF ID L114

This tutorial is suitable for use with a screen reader. It explains how to split up numbers in your head when finding the difference between two numbers such as 26 and 73. Work through sample questions and instructions explaining how to use linear partitioning techniques. Find the difference between pairs of numbers. Split the numbers 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 learning objects.




Educational details

Educational value
  • Provides explanations in support of the development of mental strategies to simplify and solve subtraction problems.
  • Includes a tutorial that covers ‘rounding to nearest 10’ and ‘compensation’ strategies.
  • Provides compatibility with a screen reader.
Year level

2; 3; 4; 5; 6

Learning area
  • Mathematics

Other details

Contributors
  • Contributor
  • Name: CWA New Media
  • Organization: CWA New Media
  • Description: Technical implementer
  • Address: NEW ZEALAND
  • URL: http://www.cwa.co.nz/
  • Name: Maths Technologies Ltd
  • Organization: Maths Technologies Ltd
  • Description: Subject matter expert
  • Address: NEW ZEALAND
  • URL: http://www.nzmaths.co.nz/
  • Name: Education Services Australia
  • Organization: Education Services Australia
  • Description: Data manager
  • Publisher
  • Name: Education Services Australia Ltd
  • Organization: Education Services Australia Ltd
  • Description: Publisher
  • Address: VIC, AUSTRALIA
  • URL: http://www.esa.edu.au/
  • Resource metadata contributed by
  • Name: Education Services Australia Ltd
  • Organisation: Education Services Australia Ltd
  • Address: AUSTRALIA
  • URL: www.esa.edu.au
Access profile
  • Colour independence
  • Device independence
  • Hearing independence
  • Visual independence
Learning Resource Type
  • Interactive
Rights
  • © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.