Resources For Educators: Water: H2O = Life

Article The Biodiversity Crisis: Reefs in Crisis Humans have harmlessly harvested coral reefs for thousands of years. So why has our behavior in recent years put reefs at risk? Educator Materials Restoration of the Elwha River by Dam Removal, Washington In a single century, the salmon population of Washington State's Elwha River shrunk by more than 99 percent. What caused this dramatic... Educator Materials Science Explorations: Investigate the Giant Squid With unblinking eyes the size of soccer balls and a body that can stretch the length of a bowling alley, the giant squid has long... Educator Materials Sinking Water If you've spent even a few hours in a pool, you know that the deep end is colder than the shallow. But do you know why? Experiment... Hands-on Rubber Blubber Gloves If you've ever dipped your toes in the ocean, you know the water can be downright chilly. So how do whales and walruses manage to... Hands-on Slowing the Flow All mammals—dogs, sea lions, and even you—have an adaptation for surviving in cold water. Take the plunge, and learn why the mammalian... Hands-on Test Density with a Supersaturated Solution You know that oil and water don't mix, but what about salt water and fresh water? Find out firsthand with this kid-friendly experiment... Game Work the System! See how many different plants and animals you can find in this virtual mangrove swamp. Educator Materials That's Heavy! This "heavy" experiment allows students to discover that salt water sinks in fresh water. Reading What is Water? Did you know that all living things need water to survive? Find out more about this precious resource.