1. GeoGebra

2. Supporting Institutions Johannes Kepler University Linz Mathematics Education RISCMathematics EducationRISC Austrian Ministry of Education Dr. Christian Dorninger, Dr. Reinhold Hawle, Mag. Eva Kasparovsky Pädagogische Hochschule Niederösterreich Mag. Walter Wegscheider Pädagogische Hochschule Oberösterreich Rektorin Dr. Ulrike Greiner Private Pädagogische Hochschule der Diözese Linz Private Pädagogische Hochschule der Diözese Linz Rektor Dr. Hans Schachl

3. GeoGebra Mathematics & Technology  Collaboration between JKU, PH OÖ, PH Linz  Projects with PH NÖ  Supported by Ministry of Education Activities  Research & development projects  Close collaboration with teachers & schools  Teacher training and professional development  International conferences MathemaTech Group

4. GeoGebra

5. Conference Program Big program wins over small program in bag Conference Wiki  http://ggbconference2011.pbworks.com http://ggbconference2011.pbworks.com  Twitter: use hashtag #ggbconf  Pictures: events@geogebra.orgevents@geogebra.org Parallel Sessions 15min Presentations, change freely Working Groups Continued discussions & informal presentations Austrian Teacher Workshops (in German)

6. GeoGebra House Keeping Open Wireless Internet GeoGebra Interactive Whiteboards Promethean Board (Audimax), SMART Board (HS 6) Technical Problems: Call Klaus Schumann, see program Hotel: please pay on Mon or Tue Checkout Wed morning, Leave Luggage until 19h Monday 17h: Bus leaves for Excursion & Dinner Tuesday 19h: Castle Dinner with Music optional: sign up and pay TODAY at registration desk Questions & Souvenirs: Registration Desk

7. GeoGebra Development Projects Markus Hohenwarter Johannes Kepler University markus@geogebra.org markus@geogebra.org

8. GeoGebra 50 Years GeoGebra

9. 50 Years GeoGebra Development 2001 Markus starts coding 2005 Yves joins 2007 Mike joins 2011: 38 developers & 200 translators Celebrating 10 years of GeoGebra38 developers If you want to go fast, go alone. If you want to go far, go together. So what about the 50 years?

10. GeoGebra Open Source Libraries MathPiper Reduce Apache Commons Mathematics Library Apache Commons Mathematics Library FreeHEP Java Libraries EPS Graphics Library JLaTeXMath JUNG Tango Icon Gallery JSXGraph The Computer algebra system Reduce was started in the 1960s by Anthony Hearn. Reduce has been open sourced in 2009 and is part of GeoGebra since 2011. Thus, GeoGebra’s development really started 50 years ago.

11. GeoGebra Current Projects

12. GeoGebra GeoGebra Summer Projects  GSoC & Local Grants  2010: 5 students  2011: 13 students

13. GeoGebra Implicit Curves: f(x,y) = 0 Philipp Birklbauer, Darko Drakulic

14. GeoGebra GeoGebra Spreadsheet George Sturr

15. GeoGebra www.GeoGebraTube.org Sharing Platform Direct upload from GeoGebra Rating Comments Embedding Florian Sonner, Arpad Fekete, Judit Elias

16. GeoGebra GeoGebra & Interactive Whiteboards Improve support for interactive whiteboards Starting with Smart Board, others hopefully following soon Michael Borcherds, Corinna Kröhn

17. GeoGebra GeoGebraMobile GeoGebra applets on smartphones iPhone, iPad, Android, Kindle, etc. Gabor Ancsin, Zoltan Kovacs, Julian Lettner

18. GeoGebra GeoGebra 4.2 with CAS View Full integration of a symbolic view in GeoGebra Dynamic updates of dependencies Easy to use starting from age 13 Simon Weitzhofer, Thomas Unterthiner

19. GeoGebra GeoGebra 5 with 3D View Mathieu Blossier, Andre Eriksson, Kai Chung Tam