GeoGebra

This is read-only version of the old wiki, feel free to browse it for materials. If you want to share your own materials, please use GeoGebraTube instead. You are also welcome to help us enhance the new wiki. If any questions arise, please contact the webmaster.

Astronomy

• An introduction to epicycles, by Jon Ingram
• Some problems in orbits using Geogebra,by Allen Holmes
• Kepler's laws of planetary motion, by Giora Mann, Nurit Zehavi and Guy Hed
  
  • The orbit of a planet and a worksheet.
    
  • Equal areas at equal times and a worksheet.
• Orbiting Planets and a Comet

• Solar system, Download
• Interactive Planetarium, by Michael Horvath. Shows the orbits and positions of the eight major planets on a given Julian Day. Uses the spreadsheet feature for holding parameters, so you should be able to copy/paste data for different epochs directly from JPL's HORIZONS ephemeris database.