In case this is of interest to other, I came across this information. 3 manuals on how to use google earth in a classroom. I had a quick look. They seem well done. Visit the manuals
webpage at digitialexplorer.co.uk to obtain the pdfs.
Virtual Fieldwork Using Google Earth
An introductory manual to using Google Earth with a GPS unit and digital camera to create virtual tours of fieldwork. The techniques can be extend the value of fieldwork back in the classroom, where it can be reviewed, shared and used to prepare for the next time (PDF, 1.2MB)
Advanced Virtual Fieldwork Using Google Earth
This manual contains additional techniques including importing spreadsheets; creating polygons and paths; inserting video; using image overlays; and creating 3D graphs based on field data. (PDF, 3.0MB)
School Grounds Projects Using Google Tools
All the information needed to carry out Digital Fieldwork in the school grounds. The manual is based around a 6 session project investigating any aspect of the school grounds and covers the following topics: digital photography, blogging, Google Earth, Google Maps, digital video, and project management. (PDF, 2.6MB)