GeoGebra is dynamic mathematics software that helps visualize and understand mathematics concepts through an interactive and simple interface. It is free and open source, allowing it to be downloaded on all platforms and used anywhere in over 50 languages translated by volunteers. GeoGebra promotes understanding for both teachers and students, and allows students to build creative works like animations and simulations. It has a large global community of millions of users in 190 countries supported by volunteer translation, development, and education institutes around the world.
1. GeoGebra in Math Education
A Global Community
Presented by Linda Fahlberg-Stojanovska
2. Dynamic Mathematics for Everyone
What does this mean?
• Dynamic Mathematics
Interactive software that helps visualize and
understand mathematics
Simple interface, powerful mathematics
3. Dynamic Mathematics for Everyone
What does this mean?
• for Everyone
FOSS (free and open source software)
Translatable (and already translated into more
than 50 languages by volunteers)
4. • FOSS (Free and open source software)
http://geogebra.org
• Can be downloaded for all platforms
• Can be used on school LANs directly
via a web browser (no install)
• Can be used offline
Why GeoGebra?
9. Dynamic Square
– With active
• Click once to get Point A.
• Click again to get Point B.
• Dialog box will open … 4 is there… click on OK.
9
10. Square Dynamics
– CLICK on the Move tool
– You can click and drag point A or point B.
– The square is ALWAYS a square.
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11. Square Dynamics
– You can click and drag the square itself.
This will only move the square
- the dimensions of the square
depend on A and B!
- Try to click and drag point C
or point D.
– Why can’t you click and drag points C or D?
– Answer: They are dependent on A and B.
11
12. • Many, many applications
– Ready to use applets are available.
– Is easy to use, powerful and dynamic.
– Teachers can use it to better understand what
they are teaching.
– Teachers and students can freely use it anywhere.
– Students can build animations, simulators, …
Why GeoGebra?
14. • Teachers/Students can use it to better understand
Why GeoGebra?
http://geogebramath.org/lms/nav/activity.jsp?sid=__shared
&cid=emready@linda_s_calculus_class&lid=2
15. • Many, many applications
– Students can do great things!
• Challenge
http://madeiramath2.wikispaces.com/Weekly+GeoGebra+Construction+Challenges
• Result – Incredible student creativity
– http://madeiramath2.wikispaces.com/James+OC+Portfolio+Page
• Credit: Steve Phelps, HS Teacher
Why GeoGebra?
20. in Numbers
Millions of Users in 190 Countries
50 languages
> 120 Volunteer translators
10 Developers
> 40 Institutes
15 000 Online Learning Objects
21. 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
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
2004 2005 2006 2007 2008 2009
Millions
23. GeoGebra Community
• Teacher training and support
– Offer workshops & support
• Material and software development
– Share free materials
• Research
– Encourage and coordinate collaborative
research
25. GeoGebra Certifications
• GeoGebra Users: effective use in own classroom
• Creative GeoGebra Users: create and share innovative
teaching; provide support and workshops in own schools
or districts
• GeoGebra Trainers: carry out practitioner research on
innovative practices; deliver results in own country
• GeoGebra Institute Trainers: highly experienced
GeoGebra presenters, trainers, and researches; provide
support and offer training for IGI participants
26. Additional IGI activities
• Text books and online courses with integrated GeoGebra materials in
e.g. Australia, Austria, Belgium, Chile, France, Germany, Hungary,
Norway, Singapore, Taiwan, USA
• Book: Model-Centered Learning with GeoGebra: Theory and Practice
in Mathematics Education
• Journal Special Issues: Mathematics, Statistics, Operation Research
Connections
• On-line assessment: TAO (Luxembourg), WebWork (Rochester, NY),
STACK (Birmingham, UK), GeoGebraTUTOR (Barcelona, Montreal)
• Work in developing countries: SchoolNet Africa, African Institute for
Mathematical Sciences, SA
• Online journal: Connecting research and practice, USA, Canada