GeoGebra is a dynamic mathematics software that began in 2001 as a master's project combining geometry and algebra. It has grown to include over 10 developers and 120 translators supporting it in 50 languages. GeoGebra sees millions of users from over 190 countries who can access interactive worksheets, tutorials, and community-created content through its website and mobile apps. Current projects are expanding GeoGebra's capabilities to include new platforms like mobile devices and integrating symbolic math through partnerships with CAS systems.

1. GeoGebra Dynamic Mathematics, its Community Markus Hohenwarter Mathematics Education JKU Linz [email_address]

2. Overview Short History Examples Community Projects

3. GeoGebra‘s History

4. Computer Algebra Systems Derive Mathematica

5. Interactive Geometry Software

6. GeoGebra = Geometry & Algebra 2001/02 Master’s Project Univ. Salzburg Version 1.0 April 2002 Tool for Analytic Geometry: points, vectors, lines, conic sections

7. Dynamic Worksheets Version 2.1 January 2004 Interactive web pages

8. GeoGebra Examples

9. Vectors & Images

10. Theo Jansen’s Beach Beast

11. Fake-3D with GeoGebra 3.2

12. Parameter Investigations

13. Trace of Slope Function

14. Regression

15. Newton’s Method

16. Randomised Exercises Parabolas Vectors

17. GeoGebra‘s Community

18. Visitors on www.geogebra.org Visitors: 20.000/Day or 600.000/Month Downloads: 10.000/Day or 300.000/Month From 190 Countries & Territories

19. GeoGebraWiki 15,000 free learning objects www.geogebra.org /wiki

20. GeoGebra in Numbers 10 Developers 30 Institutes 50 languages 120 Translators 15.000 Online Learning Objects Millions of Users in 190 Countries

21. GeoGebra Current Projects

22. GeoGebraTube Material Platform Direct upload from GeoGebra Rating Comments

23. GeoGebraTouch

24. GeoGebraMobile GeoGebra Applets should work on Smartphones iPhone, Android, Windows Phone 7

25. GeoGebra3D University of Rouen, France

26. GeoGebraCAS Full integration of a symbolic view in GeoGebra Dynamic updates of dependencies Easy to use starting from age 13

27. GeoGebraCAS - Design GeoGebra GeoGebraCAS CAS Engine(s) MathPiper, Maxima, ...

28. Command Translations MathPiper D(x)a*x^3 GeoGebraCAS Derivative[a x 3 , x] Maxima diff( a*x^3,x ) -> 3*a*x^2 -> 3*a*x^2 GeoGebraCAS 3a x 2

29. Summer of Code 5 student projects supported by Google Grant for GeoGebra as open source project Austria, Germany, India, Spain, Sweden Locus Line Equations Sergio Arbeo. Mentor: Miguel Abánades Universidad Complutense Madrid, Spain Plotting of Implicit Curves Philipp Birklbauer, JKU