CK-12 Foundation
Ck 12: Fifth Grade Science: Earth Science: Water on Earth
[Free Registration/Login may be required to access all resource tools.] Discusses water and where it occurs on Earth, gives an overview of the water cycle, and explains how the ocean is an integral part of the water cycle and is...
Annenberg Foundation
Annenberg Learner: Journey North: Right Whales
A comprehensive article that answers a number of questions about the right whale. Questions deal with characteristics, life cycle, ecology and conservation. This site also contains lessons and activities that can be used in the...