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Dynamic Mathematics with GeoGebra
In this article we introduce the free educational mathematics software GeoGebra. This open source tool extends concepts of dynamic geometry to the fields of algebra and calculus.
Creating Mathlets with Open Source Tools
In this article we present a collaborative environment of open source tools around the dynamic mathematics software GeoGebra that gives educators the freedom to create new and modify existing materials in an online community.
Journal of Online Mathematics and its Applications
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How Does This Button Work?
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Abstract
It is not clear at the outset in dynamic geometry how the buttons relate to each other, or that the possibility of catastrophic circularity can be avoided. This was something previous writes such as Euclid were at pains to avoid. Hence we ask "how does this button work?". Or, put another way, this article is one attempt to examine the dynamic geometry package GeoGebra from the point of view of Euclidean Constructions.
Technologies Used in This Article
- This article uses Java (1.4.2 or later) for several interactive applets created with GeoGebra. You may need to install or upgrade the Java plug-in.
- The article has two video clips in the QuickTime Video (.mov) format. You may need to install the QuickTime Player to view these videos.
- The following HTML symbols are used: minus −, prime ′. If these do not display, you may need to upgrade your browser.
Keywords
- GeoGebra
- Euclidean construction
- geometry
Publication data
Published August, 2007; article ID 1606. Copyright © 2007, Christopher J. Sangwin