GeoGebra: Interactive Geometry, Algebra, and Calculus Application
Berhubung ada mata kuliah matematika diskret dimana saya harus menggambar sebuah graf, lalu setelah muter-muter di mbah google ga sengaja nemu aplikasi nya yang bagus nih, sebut saja GeoGebra :D
Langsung saja ya review nya dari Wikipedia ya biar lebih jelas .hehe
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. Many parts of GeoGebra have been ported to HTML5 by using theGoogle Web Toolkit.
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. Currently, the lead developer of GeoGebra is Michael Borcherds, a secondary maths teacher.
After a successful Kickstarter campaign, GeoGebra plans to expand their offerings to include an iPad and Android version.
Dynamic geometry, algebra and calculus
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 to understand how to prove geometric theorems.
It's main features are:
Dynamic Geometry Environment
Built-in spreadsheet with extended skills
Constructed projects can be exported in several formats. Dynamic applets can be directly uploaded to GeoGebraTube, exported to html (as a single file suitable for use in a virtual learning environment (VLE), such as Moodle). Possible direct export to HTML5 or Animated GIF. SVG vector images can be further edited using third party software, e.g. Inkscape. EMF vector formatscan 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, the PGF/TikZ packages, orAsymptote code.
GeoGebraTube is the official repository website of GeoGebra products and GeoGebra related free resources. It started working in June 2011, and it contains more than 30 000 (in April 2013) materials, like interactive presentation, games, and lessons made by GeoGebra.
Most parts of the GeoGebra program are licensed under GPL and CC-BY-SA, making them free software. However some parts, including the Windows and Mac installers, have a license which forbids commercial use and are therefore not free software. In practice, this means that non-commercial use by teachers and students is always free of charge, while commercial users may need to pay license fees. For details see the GeoGebra license description.
Since July 2010 the Debian Linux distribution offers a free version of GeoGebra in which all unfree parts of the program were removed or replaced by free software. This version may be used for commercial purposes without paying licensing fees. Hovewer, since version 4.2, Geogebra has changed the licence: Geogebra is no more considered free software and versions >= 4.2 are no more included in Debian.