I’ve tested the latest version of Google Earth 4 beta and am happy to report that it’s running very happily on my PC and the bugs that I’d experienced previously seem to have been sorted out. Thanks, as usual, to Google Earth blog.
Both history and geography teachers will like an excellent little overlay of Pompei AD79, from Google Earth hacks, especially now that the area is in high resolution. This comes from Ogle Earth - congratulations by the way on your first aniversary!
Finally, Quikmaps offers a way to add lines symbols and scribbles to a Google Map. I’m sure there are plenty of classroom uses, though at the moment my creativity seems to have deserted me! Definitely worth an investigation though. The site is extremely easy to navigate and the resulting maps are easily shared.


Just thought I would add to your comments about Quikmaps - after reading the blog I found how easy it is to embed video (via google video) into the placemarks that can be added. This would be a really effective way of showing key moments in a geography walk or local study trip - or even any school trip. See http://quikmaps.com/show/1454 and click on the green placemark for video.
Until GE can support video this seems to be the next best thing.
This is a great idea Tom. Thanks very much for the example, as you say it works extremely well. Here\’s my first effort