Tag: Michael Borcherds

15 Reasons Why GeoGebra is Successful

GeoGebra

Michael Borcherds, lead developer of GeoGebra, asked why GeoGebra is successful  in the GeoGebra Forum;  I summarized the responses and came up with 15 reasons.  Here are the reasons why GeoGebra has been so successful all these years.

  1. It is FREE.
  2. It is open source – meaning, it is developed collaboratively by us: programmers, teachers, mathematicians, and users.  Not just a few people.
  3. It runs in multiple operating systems (Windows, Mac, Linux, etc.).
  4. It runs in different devices (computers, mobile phones, tablets).
  5. It promotes mathematical connections (algebra, geometry, calculus, statistics, etc.).
  6. It highlights  multiple representations (equations, graphs, tables).
  7. It is intuitive, user-friendly, and easy to use.
  8. Its files can be easily uploaded to the web as applets.
  9. It can be exported to different file formats (png, pdf, eps, etc.).
  10. It supports Latex typesetting.
  11. It supports spreadsheet, CAS, and 3D (GeoGebra 5.0).
  12. It has elegant appearance and dynamic colors.
  13. It has excellent support community.
  14. It can be used by elementary school students up to graduate school students.
  15. It is updated frequently — actually, almost everyday.
Can you think of others?
If you haven’t tried GeoGebra yet, it’s time that you do. 
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Inequalities in GeoGebra — the long wait is over

GeoGebra

One of the best features added to GeoGebra 4.0 (still in Beta)  is graphing inequalities.  The image below were sample inequalities graph plotted in version 3.9.73.0, which, as of this writing, can be downloaded here. So far, the latest GeoGebra Beta can only graph linear inequalities. The feature is till very unstable, so updates may cause for it not to work properly. Michael Borcherds, lead developer of GeGebra, told  me that they are not yet sure if polynomial inequalities will be included in the 4.0 version.

Linear inequalities in GeoGebra 4.0 Beta

GeoGebra 4.0will probably be released late this year or early next year.

Thank You GeoGebra Team.

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