This video-enhanced lesson will challenge students to design and conduct scientifically valid experiments to evaluate hypotheses regarding an animal’s expected behavior in response to changes in its environment. (Grades 9-12)

In this video-enhanced lesson, students will explore the concepts of adaptation and evolution as seen in different species of birds. (Grades 9-12)

Clips from the NATURE episode "Holy Cow!" show the cow's digestive system and illustrate other naturally evolved and artificially selected traits of cattle.

This video-enhanced lesson focuses on how and why humans have been so successful in selectively breeding cattle to suit our needs, while also exploring the limitations and consequences of this success. (Grades 9-12)

Video excerpts from NATURE's "Diamonds" demonstrate the characteristics of diamonds, and explore the value they hold for scientists and the general public.

In this video-enhanced lesson, students will explore the characteristics of diamonds, and begin building an understanding of their formative environment, the resulting crystal structures and the physical properties of earth materials. (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)

Segments from the NATURE episode "Ireland" provide examples of the effects glaciers can have on a landscape.

These excerpts from the NATURE episode "Violent Hawaii" demonstrate how volcanic islands are formed, and what scientists can discover studying magma, lava and eruptions.

In this video-enhanced lesson, students will use a combination of multimedia and hands-on activities to learn about different types of volcanoes, why volcanic eruptions happen, and the impact eruptions have on the Earth's landscape. (Grades 9-12)