Science (Ecology): How do wolves affect the food web and change rivers?

This is an excellent video about how the absence and reintroduction of wolves in Yellowstone affected the Yellowstone food web and even change the behavior of rivers.  Now you might be wondering as I did, how in the heck can wolves change the behavior or the Yellowstone rivers.  The images in this video are very beautiful and your students will enjoy this short video.  If you are teaching some ecology in your science classroom then this video is for you.

Subject:  Science (Ecology)
Grade Level:  5-12
Time:  4:33

Science: What are population distributions?

This is an awesome video that can serve as an introductory to population distributions.  It talks about the three different population distributions:  aggregated, uniform, and random.  The video contains neat footage of animals and plants living in different locations of the world.

Subject:  Ecology
Grade Level:  4-12
Length:  3:51