Become an Explorer is a nine part series of tutorials, directions, and quizzes regarding Google Earth skills. It offers the basics of navigation and advanced features of Google Earth.
Via via activehistory.co.uk, this taxonomy of Socratic questions is not a hierarchy but rather categories build upon each other and do not necessarily follow a pattern or design. The role of the educator is to keep the inquiry "on track," but, also, to allow the students to follow a path of their own design.