GeoGebra 3.0.3.0 |
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| Developer(s) | Markus Hohenwarter et al |
|---|---|
| Stable release | 4.0.17.0 / December 25, 2011 |
| Preview release | 4.1.30.0 / December 14, 2011 |
| Operating system | Cross-platform |
| Platform | Java |
| Type | Interactive geometry software |
| License | GPL, cc-by-sa (installers, language files) and others. |
| Website | www.geogebra.org |
GeoGebra is an interactive geometry, algebra, and calculus application, intended for teachers and students. Most parts of GeoGebra are free software. GeoGebra is written in Java and thus available for multiple platforms.
Its creator, Markus Hohenwarter, started the project in 2001 at the University of Salzburg, continuing it at Florida Atlantic University (2006–2008), Florida State University (2008–2009), and now at the University of Linz together with the help of open-source developers and translators all over the world.
Contents |
GeoGebra is dynamic geometry software. Constructions can be made with points, vectors, segments, lines, polygons, conic sections, inequalities, implicit polynomials and functions. All of them can be changed dynamically afterwards. Elements can be entered and modified directly on screen, or through the Input Bar. GeoGebra has the ability to use variables for numbers, vectors and points, find derivatives and integrals of functions and has a full complement of commands like Root or Extremum. Teachers and students can use GeoGebra to make conjectures and prove geometric theorems.
There is a pool of free educational resources and dynamic worksheets hosted on the website.
Constructed projects can be exported in several formats. Dynamic applets can be directly uploaded to GeoGebraTube[1], exported to html (as a single file suitable for use in a virtual learning environment (VLE),[2] such as Moodle). SVG vector images can be further edited using third party software, e.g. InkScape. EMF vector formats can be directly imported in several Office applications. There are also options for exporting to the system clipboard, PNG, PDF, EPS, PGF/TikZ and Asymptote.
GeoGebra can also create code that can be used inside LaTeX files in order to create that same images that GeoGebra generates, through the PSTricks package.
Most parts of the GeoGebra program are licensed under GPL and CC-BY-SA[3], making them free software.