if you use google earth can you ask what kind of image overlays and network link info they would like to see that would help them teach the subject...

As want to try and create a custom package of kml files and image overlays for free version that will help in teching over ks3 and ks4...

So if can get an idea what they want then I can look into info sources and technical aspect of creating it...

cheers

Russ