G.I.S. - Geographic Information Systems

ArcVoyager This program is old, but easy to use, and free! It also has a lot of printable activities that you can explore GIS with!

ArcView The most well used GIS system.

ArcGIS Explorer This is a free GIS software package. It has limited ability to make maps, but still a good tool.

GIS Day Activities A whole bunch of activities for grades K-12.

GIS Climate Activity This is a printable lesson on climate.