While this is not the traditional, step-by-step lesson plan, it is chock-full of material that you can easily incorporate into your earth history unit. Its main purpose is to serve as a guide to using a three-part film, The Day the Mesozoic Died, which uncovers evidence in the fossil record for the mass extinction at the end of the Cretaceous period. Key concepts, background information, discussion points, and quiz questions are provided. There are also several links to related resources such as video lectures, slide presentations, and posters.