GeoGebra is a free interactive geometry software for education in schools. 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. GeoGebra is written in Java and thus available for multiple platforms
Dynamic Geometry, Algebra and Calculus
GeoGebra is dynamic geometry software. Constructions can be made with points, vectors, segments, lines, polygons, conic sections, and functions. All of them can be changed dynamically afterwards. Elements can be entered and modified directly on screen, or through the command line. 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 can use GeoGebra to make conjectures and prove geometric theorems.
Teaching Materials
The GeoGebraWiki is a free pool of educational materials for the dynamic mathematics software GeoGebra. Preview a few dynamic worksheets created with GeoGebra, these and other worksheets can be found in the English section of GeoGebraWiki.
- Circles Domain and Range
- Absolute Value Domain and Range
Visualizing Domain and Range
- Inscribed Angle
Investigation of an angle inscribed in a circle
- Inscribed Angle Practice
Practice worksheet for an angle inscribed in a circle
- Triangle Angle Sum Theorem
- Triangle Exterior Angle Theorem
Investigating Triangle Angle Properties
- Point-Slope form
- Slope-Intercept form Investigating Linear Equations
