Introduction to Google Earth – edtech VISION: "What is Google Earth?
Google Earth is a free, downloadable program that combines satellite images, maps, and terrain to create a 3D virtual model of the world.
You can search for specific locations in Google Earth and create your own virtual tours. Other options to explore are content developed by NASA, Discovery Education, National Geographic Magazine and more!To get started you need to download and install the latest version of Google Earth from http://earth.google.com/download-earth.html. Google Earth is available for PC, Mac or Linux computers."