Earth science information for education
An earth science resource providing information about fossils and geologic history. Find articles on fossils, fossil formation and geologic time, with activities for kids, and lesson plans. [broken link]
http://www.fossils-facts-and-finds.com/
Earthfragments
Rocks, fossils, minerals, and crystals for sale. We specialize in Natural Carboniferous/Pennsylvanian PA fern plant fossil display slabs excavated from Pennsylvania coal mines. Forum, links, more.
[broken link]
http://www.earthfragments.com/
Global Positioning Systems explained
A tutorial explaining Geographic Positioning System (GPS) receivers in simple terms. [broken link]
http://www.gpsprimer.net/
Information about GPS watches
A vast resource with information about GPS watches. [broken link]
http://www.gps-watches.info/
Links in this category: 4
36 
35 
214
