Teach the Earth > Teaching Methods > Earth History Approach > How to Organize an Earth History Course or Unit
Leonod meteor shower NASA Arizona Meteor Crater NASA slice of meteorite NWA 1941
Paleontology deals with a phenomenon that belongs to it alone among the evolutionary sciences and that enlightens all its conclusions - time.
S.J. Gould and Niles Eldredge (1972)

Earth history concepts such as geologic time can themselves be used to structure a course or unit and enable the instructor to emphasize the connections between the topics and the disciplines being taught.

It may be best to break Earth history up and to focus on a particular time period of interest.

Other Possibilities

There are, of course, other logical ways to organize an Earth history course or unit. For example, it is possible to teach paleontology one lineage at a time, studying the brachiopods, then the bryozoans, then onto others.


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