Introduction to GeoGebra

There's plenty more support for using GeoGebra at their homepage: www.geogebra.org

Here are direct links to pages we visit:
GeoGebra Classic: www.geogebra.org/classic
Spreadsheet: https://www.geogebra.org/classic#spreadsheet
Probability: https://www.geogebra.org/classic#probability

This is non-commercial use for educational purposes as allowed by GeoGebra's license. (Thank you, GeoGebra development community!!)