GeoGebra is Great!
April 27, 2010
I finally figured out how to post GeoGebra applets on Google Sites so that I can link to them from WordPress.com (which does not support them).
The greatest value of GeoGebra, or Geometer’s Sketchpad, or other such packages, in my eyes is their ability to help students dynamically visualize the effect each constant has on the graph of an equation. I find them an invaluable “thinking aid” as I ponder a new equation form, and they help me formulate my own answers to questions such as “why does it do that?”
Check out ones for Linear functions:
- Slope-Intercept Form – Interactive Linear Function Graph
- Point-Slope Form – Interactive Linear Function Graph
- Standard Form – Interactive Linear Function Graph
Quadratic functions:
- Standard Form – Interactive Quadratic Function Graph
- Vertex Form – Interactive Quadratic Function Graph
Exponential and Logarithmic functions:
Rational functions:
Trigonometric functions:
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Neat stuff. Have you discovered the Wolfram Alpha site yet? http://www.wolframalpha.com/
Yes! I have dabbled with it a bit, but have read a number of postings extolling its virtues while simultaneously wondering how to make best use of it in teaching.
Thanks for including my blog here. To the readers, lots and lots of step-by-step tutorials here:
http://math4allages.wordpress.com/geogebra/
you may want to check it out.
I loved this applet – it’s great. Is there a way to save it and then copy and paste the image into a word document?
1) Click on the “[.ggb][-]” in the title bar of the Geogebra pane to download the “ggb” file and save it on your computer
2) Download (if you do not already have it on your computer) and start up Geogebra
3) In Geogebra, use the File / Open menu selection, navigate to the folder where you saved the ggb file, and open it.
4) Use the mouse in Geogebra to click and drag over the section of the coordinate plane you wish to copy/paste. You will see a shaded rectangular region drawn.
5) Use Edit / Graphics View to Clipboard (Ctrl-Shift-C) to copy the selected area to the clipboard
6) Switch to a Word document, and Edit / Paste (Ctrl-V) to paste the image into your document. If this does not quite produce the desired result, try using Edit/Paste Special… instead.
Hope this helps/works!