Google today launched Google for Educators, to help teachers use Google products in the classroom. One section is about how Google Earth can be used as a teaching tool, and it includes a page with detailed lesson plans prepared in cooperation with Discovery Education unitedstreaming [sic]. (Strangely, these lessons plans still use the old Google Earth 3 interface for screenshots and instructions.)
re using GE3 not that surprising as most school computers are relatively old and needs to be stable _ also better chance of being used in developing world situations where its needed most