Introduction--What Is GPS?
http://www.lowrance.com/Tutorials/GPS/gps_tutorial_01.asp

Lowrance Electronics Inc.

This Global Positioning System (GPS) tutorial from Lowrance Electronics introduces GPS and discusses position determination, GPS accuracy, differential GPS, and Wide Area Augmentation System. There are also links to other tutorials, products and utilities.

This resource is referenced here:

• Starting Point-Teaching Entry Level Geoscience:Teaching with GIS: Using GPS in Geoscience Education

Subject: Geography:Geospatial
Resource Type: Pedagogic Resources:Overview/Summary, Datasets and Tools:Tools