This video-enhanced lesson uses clips from the NATURE film "Crash: A Tale of Two Species" to explore the interrelationship between the horseshoe crab and a small migratory bird called the red knot. (Grades 5-8)

These video clips from the NATURE episode, "Crash: A Tale of Two Species" explore the interrelationship between the red knot and the horseshoe crab.

This guide helps students focus on endangered animals that are facing the possibility of extinction, and explore the ways people are trying to protect them.

During this video-enhanced lesson, students will watch segments from the NATURE film “The Secret World of Sharks and Rays” and learn about adaptations that have helped sharks and rays survive. (Grades 5-8)

These video segments from the NATURE film “The Secret World of Sharks and Rays” illustrate for students the adaptations that have helped sharks and rays survive.

This lesson uses clips from NATURE's episode "The Loneliest Animals" to explore a variety of captive breeding programs. (Grades 5-8)

These clips from NATURE's episode, "The Loneliest Animals" are used to explore a variety of captive breeding programs.

Using segments from NATURE's "The Wolf that Changed America" students will explore 19th century attitudes toward wolves in the western United States. (Grades 9-12)

These video segments from NATURE's "The Wolf that Changed America" explore 19th century attitudes toward wolves in the western United States.