GeoGebra
GeoGebra
Supporting Institutions
Johannes Kepler University Linz
Mathematics Education
RISC
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
Rektor Dr. Hans Schachl
GeoGebra
MathemaTech Group
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Mathematics & Technology
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Collaboration between
JKU, PH OÖ, PH Linz
Projects with PH NÖ
Supported by Ministry of Education
Activities
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Research & development projects
Close collaboration with teachers & schools
Teacher training and professional development
International conferences
GeoGebra
GeoGebra
Conference Program
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Big program wins over small program in bag
Conference Wiki
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http://ggbconference2011.pbworks.com
Twitter: use hashtag #ggbconf
Pictures: events@geogebra.org
Parallel Sessions
15min Presentations, change freely
Working Groups
Continued discussions & informal presentations
Austrian Teacher Workshops (in German)
GeoGebra
House Keeping
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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
GeoGebra
Development Projects
Markus Hohenwarter
Johannes Kepler University
markus@geogebra.org
GeoGebra
50 Years
GeoGebra
GeoGebra
50 Years GeoGebra Development
2001 Markus starts coding
 2005 Yves joins
 2007 Mike joins
 2011: 38 developers & 200 translators
Celebrating 10 years of GeoGebra
If you want to go fast, go alone.
If you want to go far, go together.
 So what about the 50 years?
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GeoGebra
Open Source Libraries
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MathPiper
Reduce
Apache Commons
Mathematics Library
FreeHEP Java Libraries
EPS Graphics Library
JLaTeXMath
JUNG
Tango Icon Gallery
JSXGraph
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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.
GeoGebra
Current
Projects
GeoGebra
GeoGebra Summer Projects
GSoC & Local Grants
 2010: 5 students
 2011: 13 students
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GeoGebra
Implicit Curves: f(x,y) = 0
Philipp Birklbauer, Darko Drakulic
GeoGebra
GeoGebra Spreadsheet
George Sturr
GeoGebra
www.GeoGebraTube.org
Sharing
Platform
 Direct upload
from GeoGebra
 Rating
 Comments
 Embedding
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Florian Sonner, Arpad Fekete, Judit Elias
GeoGebra
GeoGebra & Interactive Whiteboards
Improve support
for interactive
whiteboards
 Starting with
Smart Board,
others hopefully
following soon
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Michael Borcherds, Corinna Kröhn
GeoGebra
GeoGebraMobile
GeoGebra
applets on
smartphones
 iPhone, iPad,
Android,
Kindle, etc.
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Gabor Ancsin, Zoltan Kovacs, Julian Lettner
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
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Simon Weitzhofer, Thomas Unterthiner
GeoGebra
GeoGebra 5 with 3D View
Mathieu Blossier, Andre Eriksson, Kai Chung Tam