Google Earth is a mapping tool that allows users to view satellite imagery and 3D models of locations around the world. It has many features that can be used in the classroom, such as layers that integrate additional data, distance measurement tools, and the ability to embed videos, images and websites in user-created placemarks and tours. Examples provided demonstrate how students have used Google Earth for virtual field trips to study frogs on different continents and to collaboratively report on climate and weather from regions around the world. The document provides guidance on how to incorporate tools like placemarks, polygons and overlays into lessons to engage students and help them conceptualize geographic concepts.