In this lesson, students will create an informational program to educate people as to the benefits of the wolves' presence in the Yellowstone ecosystem.

This video-enhanced lesson plan explores how the interactions of air, moisture, wind, and topography in Death Valley, CA contribute to an environment of extremes. (Grades 9-12)

In this video-enhanced lesson, students will learn how glaciers and glacial movement have affected the Earth through a series of Web interactives and hands-on activities. (Grades 9-12)