How I Use It
I have created a web site for my classes to use at http://web.psjaisd.us/auston.cron/ABCronPortal/. Most of my applets are for Algebra and Trigonometry...
I use the site daily and the GeoGebra program in demo mode, illustrations, student use in place of calculator. Students can type equations as WYSIWYG and get the graph.
GeoGebra is called Dynamic Mathematics for Everyone. To me it is representative of a Dynamic Mathematics Environment. Students can learn math from K-16.
GeoGebraTube (http://www.geogebratube.org/) is a large data base of ready to use applications with work in any HTML5 browser. It is available in over 50 languages.
Does more than other similar software which cost $$. Free worldwide software and support in GeoGebra Forum https://www.geogebra.org/forum/index.php