Using GeoGebra in Your Middle School Mathematics Classroom

 What is GeoGebra? GeoGebra is dynamic mathematics software for schools that joins geometry, algebra, and calculus.   These two views are characteristic of GeoGebra: an expression in the algebra window corresponds to an object in the geometry window and vice versa. On the one hand, GeoGebra is an interactive geometry system. You can do constructions with points, vectors, segments, lines, and conic sections as well as functions while changing them dynamically afterwardsOn the other hand, equations and coordinates can be entered directly. Thus, GeoGebra has the ability to deal with variables for numbers, vectors, and points. It finds derivatives and integrals of functions and offers commands like Root or Vertex. How do you use GeoGebra?  GeoGebra’s user interface consists of a graphics window and an algebra window. You cYou operate the provided geometry tools with the mouse in order to create geometric constructions on the drawing pad of the graphics window.Alternatively, you can directly enter algebraic input, commands, and functions into the input field by using the keyboard. While the graphical representation of all objects is displayed in the graphics window, their algebraic numeric representation is shown in the algebra window.    The user interface of GeoGebra is flexible and can be adapted to the needs of your students. If you want to use GeoGebra in early middle school, you might want to hide the algebra window, input field, and coordinate axes and just work with the drawing pad and geometry tools. Later on, you might want to introduce the coordinate system using a grid to facilitate working with integer coordinates. In high school, you might want to use algebraic input in order to guide your students through algebra on into calculus. Information on this page was taken from Hohenwarterk, J. and Honenwarter, M. (2008). Introduction to GeoGebra