GIS, mapping, and spatial reasoning are the focus of Latitude, NITLEâ€™s GIS Initiative. It promotes the use of mapping and GIS for the purposes of developing and enhancing a spatial understanding of liberal arts curricula. The NITLE Geographic Information System Initiative provides resources to get started with GIS. Including free online geographic information systems tutorials.
Below are a few pointers.
This is k12:
From the Google Earth blog:
An incredible impressive project (see the methods section), its outcome released in public domain.