1
Published in 2017
What are coral reefs? Coral can be found in tropical ocean waters around the world. But how much do you know about reefs and the tiny animals—polyps—that build them? Learn all about coral and why warming waters threaten the future of the reef ecosystem.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
Teaching Media Videos or Animations
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2
Facts and information about different types of natural phenomena found in the world and universe. Includes weather, geology, space, and other types of phenomena. This site is designed to be an easy-to-use website for students and anyone interested in the subject matter. This site breaks phenomena...
Grade Level   6 7 8 9 10 11 12
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3
Published in 2016
These global land cover layers are the product of a collaboration between USGS and the University of Maryland, Department of Geographical Sciences. Thirty meter resolution raster data layers for circa 2010 tree cover and bare ground and a persistent surface water layer 2000-2012, have been derived...
Grade Level   6 7 8 9 10 11 12
Maps and Visualizations Teaching Media
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