For folks needing great tools for STEM education, Charlie Fitzpatrick wrote a compelling blog entry at the Education Community for ESRI. Check it out at http://blogs.esri.com/Info/blogs/gisedcom/archive/2009/11/09/fun-with-gis-30-gis-powertool-for-stem.aspx.
http://gisined.blogspot.com
http://www.barbareeduke.com
http://www.barbareeduke.com