<< Tim Busken's Homepage 
  • Grossmont College Flex Week
              GeoGebra Workshop
    Coming in January 2014

What is GeoGebra?

GeoGebra is an interactive geometry, algebra, calculus and statistics application intended for teachers and students. GeoGebra is free software that has a gentle learning curve. GeoGebra is written in Java so that it can be made available on multiple platforms. GeoGebra's main features are its (1) dynamic geometry environment, (2) its built-in computer algebraic system (CAS), (3) it allows for scripting and (4) it has a built-in spreadsheet with highly extensible skills!!

Why Use GeoGebra?

Show students how to make and export graphs to be included in their lab reports, papers and powerpoint presentations. Construct and export custom graphs to Word or to \(\LaTeX\) for your quizzes, exams, projects and worksheets. Use shared, interactive worksheets from GeoGebraTube in the classroom to illustrate, motivate and animate mathematical and scientific concepts, definitions and theorems. Nest interactive Geogebra worksheets and animated gifs into your custom html or php pages, Moodle or Blackboard sites!

The worksheet (right) is from GeoGebraTube contributor Thomas Hoellermann. Move the slider bar or limits of integration to see the definite integral definition in action! \[ \int_a^b f(x) \ dx = \lim_{||P||\to 0 }\Biggr( \sum_{k} f(x_k) \Delta x_k\Biggr)\] Mathematics above rendered with MathJax.

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, by dragging the mouse or using the input bar. Elements can be created and modified directly on screen in a drop-and-drag, wysiwyg environment, or through the Input Bar. GeoGebra has the ability to use variables for numbers, vectors and points, and those variables or variable expressions can be manipulated. GeoGebra has a library of over 450 commands like find derivatives and integrals of functions, roots or extremum. Teachers and students can use GeoGebra to make conjectures and to understand how to prove geometric theorems.
GeoGebra can easily be incorporated into a lab component of your course curriculum. My Elementary Statistics students use the free software to handle, manipulate and visualize data sets and distributions, obtain one and two variable statistics, calculate regression lines and residuals, as well as probabilities from distributions. Attend the GeoGebra Workshop at Grossmont College in January during Flex Week and I'll show you a handful of the basics I know.

Webpage Maintained by Tim Busken

E-mail: Tim.Busken@gcccd.edu

Last Updated on April 13, 2014

               Powered by MathJax