GeoGebra Workshop GCCTM Meeting

Dr. Joanne Goodell Cleveland State University September 13, 2010

What is GeoGebra

• A free dynamic mathematics software for schools that joins geometry, algebra and calculus • Two windows, one for graphics and the other for algebraic expressions form the interface • Drawing pad used like Geometer’s Sketchpad, can be used without the algebra window • Can create interactive Java applets from your drawings that can be run from any web site • Book has great introductory materials • Wiki has lots of free materials • Could be used to supplement or replace GSP

GeoGebra Options

• Can run as independent Java applet from the computer you are using-this may not work in the lab without tech support setting it up. • Web start runs the Java applet from within the browser installed on the computer you are using-will probably work without tech support, but you must have internet access.

Links for GeoGebra

• • Home page for GeoGebra http://www.geogebra.org/cms/ • Book has great introductory materials • • http://www.geogebra.org/book/intro-en/ • Wiki is used to download and upload teaching materials http://www.geogebra.org/en/wiki/index.p

hp/English

Try These

• • http://www.geogebra.org/en/upload/files/en glish/Dixon_RN/Circle_Basics.html

http://www.geogebra.org/en/upload/files/en glish/Cullen_Stevens/trianglecenters.html

• • http://www.geogebra.org/en/upload/files/kn wilson/Transformations.html

http://www.geogebra.org/book/intro-en/ • Do activities 5, 7, 9 and 10 at least from the book before branching out to further explorations on the next slide.

• • GeoGebra Main Site http://www.geogebra.org

• • Classroom activities index http://www.geogebra.org/en/wiki/index.p

hp/English • • 4th grade math teaching activities http://geogebrawiki.wikispaces.com/Home

• • Demonstrations of how to use GeoGebra http://math247.pbworks.com/Learn-and Use-GeoGebra • • Practicing slope-intercept interactive worksheet http://www.geogebra.org/en/upload/files/ english/steve_phelps/CP_Geometry/Slope_ intercept_practice.html

• • Math 24 7 website http://www.mathcasts.org/

• • Bisecting angles mathcast http://www.youtube.com/watch?v=wVOaHn RGg3c&p=5F6C060E4E4F2AB0&index=8&pl aynext=1 • • Measuring and drawing angles with protractor – REALLY GREAT FOR SMART BOARD!!

http://mathcasts.org/gg/student/angles/angle s/angles_index.html

• • Making an interactive worksheet http://www.youtube.com/watch?v=SVSNHh Ceukw&NR=1

Further Exploration

• Look at other activities and resources online. Wiki middle school level contains protractor practice • Adapt Sketchpad activities for GeoGebra • Write new explorations to match your curriculum and standards and export as java applets for your students to use on your website.