## Geogebra

OK, I’ve been a little busy on a few projects and I’ve had a little trouble getting to some of the things on my “To Do When I Get A Chance” list. At the top of my list is learning to use Geogebra. Geogebra is an interactive algebra/geometry program that can be used to help students develop an understanding of mathematics.

There are so many tutorials available online that it is almost overwhelming. I’d recommend looking at the various video tutorials that are available on YouTube.

It took me 10 minutes to make an applet to help my students learn how to shift exponential functions. If you want to check it out, here is the page: http://georgewoodbury.com/exponential_function_1.html . It needs some improvement (I want to show more of quadrants 3 & 4), but it is easy to edit the geogebra file and create a new html page with those changes.Here’s a quick snapshot of the screen.

It seems like the possibilities are endless – shifting graphs in trigonometry, a demo that explains the mean value theorem conceptually, an exploration of slope in algebra, …

Have you used Geogebra to help teach your classes? What topics have you worked with? Do you have any pointers to share with a newcomer? Please share your experience and leave a comment, or you can reach me through the contact page on my website .

-George

I am a mathematics instructor at College of the Sequoias in Visalia, CA. Each Friday I will blog about technology, inside and outside of the classroom. Let me know if there are other topics you’d like me to cover by leaving a comment or by reaching me through the contact page on my website: georgewoodbury.com.

• […] This post was mentioned on Twitter by George Woodbury, George Woodbury. George Woodbury said: Geogebra: http://wp.me/piFnK-fb […]

• 2. Whit Ford  |  November 29, 2010 at 8:12 am

Here are some Geogebra applets I have put together to help students understand the effect of each coefficient in various function forms. I love it as a tool! Unfortunately, WordPress cannot host them, so I had to use Google Sites instead – but it works:

• 3. georgewoodbury  |  November 29, 2010 at 10:42 am

Hi Whit – Thanks for sharing. I think I am going to put together a Geogebra page on my blog or web site. Are you OK if I put a link to your page? They look really good, and I like the investigative side of your applets.

• 4. Whit Ford  |  November 29, 2010 at 10:58 am

Whit

• 5. Guillermo Bautista  |  January 5, 2011 at 8:51 pm

I have more than 40 GeoGebra tutorials here:

http://math4allages.wordpress.com/geogebra/

You may want to check it out.

• 6. georgewoodbury  |  January 5, 2011 at 9:09 pm

Thanks for sharing!