Learning objects Angle estimator

TLF ID M012238

This is an interactive resource containing two activities about estimating and measuring angles. In the angle estimation activity, users can select acute, obtuse or reflex angles, or any angle between zero and 360 degrees. In the angle drag activity, one arm of the angle can be dragged to rotate around the vertex, creating angles of different sizes. Both activities have the options to show or hide the size of the angle and to overlay the angle with a virtual protractor.

Educational details

Educational value
  • This resource is useful for estimating and measuring angles using degrees. It is highly visual and easy to use. The virtual protractor can be moved or rotated in the same way as a real protractor.
  • This interactive resource is useful for the Australian Curriculum content description in year 5 mathematics about estimating and measuring angles using degrees. The resource can contribute to students attaining the element of the achievement standard in the Australian Curriculum for year 5 about constructing and measuring angles.
  • The option to show or hide the size of the angles allows students to measure angles or make estimates of the sizes of angles and check their work immediately.
Year level


Learning area
  • Mathematics

Other details

  • Contributor
  • Name: Education Services Australia
  • Organization: Education Services Australia
  • Description: Data manager
  • Address: VIC, AUSTRALIA
  • URL: http://www.esa.edu.au/
  • Copyright Holder
  • Name: E-Chalk Limited
  • Organization: E-Chalk Limited
  • URL: http://www.echalk.co.uk/
  • Publisher
  • Name: E-Chalk Limited
  • Organization: E-Chalk Limited
  • Description: Publisher
  • URL: http://www.echalk.co.uk/
  • Resource metadata contributed by
  • Name: Education Services Australia Ltd
  • Organisation: Education Services Australia Ltd
  • Address: AUSTRALIA
  • URL: www.esa.edu.au
Access profile
  • Unknown
Learning Resource Type
  • Interactive
  • © 2012 E-Chalk Ltd. This material may be used, reproduced and adapted free of charge for noncommercial educational purposes, provided all acknowledgements associated with the material are retained.