This site provides wonderful lesson plans about dinosaurs. Seven sequenced units cover the following topics: extinction, fossils, types of dinosaurs, and the dinosaur life cycle. The site provides basic lesson and background information...

Click "Start Fieldtrip," for a wonderful look at a subject that has been a constant amazement to children of all ages. This dinosaur learning module for grades 1-3 is a "Prehistoric adventure," discussing dinosaur fossils, the size of...

In this amazingly comprehensive tutorial you will learn about the geological and environmental changes that occurred during the geologic time scale.

Borths, D'Emic, and Pritchard give a quick history of mass extinctions. [5:01]

[Free Registration/Login may be required to access all resource tools.] The two periods of the Cenozoic Era, Tertiary and Quaternary, granted the mammals the time and space to evolve since the dinosaurs became extinct.