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Step-by-step Tutorials for using GeoGebra (http://www.geogebra.org), from beginning stages, to advanced features such as interacting with the Web Page, LaTex, and a taste of what's to come with GeoGebra 3.2 (curve fitting). Contains applets, pdf script, and Camtasia demonstrations.
This is really a good resource material for me. My colleague mentioned this to me last year. I tried it but I really need more time to figure out how to work it out. I am used to Geometer's Sketchpad but some of my students could not afford to buy it and my school don't have a budget for it. The good thing about GeoGebra is that it is free. You have the video on how to use it which is great and activities that I can use in the future.
Maybe a background music can help or an option to include background music. Most of my students are inclined to music, adding background music might helped them think deeper.