Enduring Resources for Earth Sciences Education:  This is a database of materials for teaching earth science concepts.  Created by teachers and earth scientists, the database includes maps, documents, and other resources for  teaching about earthquakes, volcanoes, rocks, oceans, plate tectonics, hydrodrothermal systems, earth's magnetic field,  geological time, and more.  (National Science Foundation)
     http://www.free.ed.gov/resource.cfm?resource_id=2086

Ocean Service Education: provides online tutorials on corals, currents, estuaries,  geodesy (global positioning), pollution, and tides; case  studies on an oil spill and an invasive species (Lionfish);
two mysteries for young students (grades 3-5) to solve; and  dozens of lesson plans on climate change, coral reefs, currents, ecosystems, estuaries, global positioning, habitat  management, marine sanctuaries, navigation, ocean exploration, pollution, tides, and more.  (National Oceanic and Atmospheric  Administration)
     http://www.free.ed.gov/resource.cfm?resource_id=2094

Science Bulletins: provides visualizations and stories of recent developments in  earth science, climate change, biodiversity, human biology, evolution, and astrophysics.  See visualizations for learning
about sea ice changes, coral reefs, desertification in Africa,  origins of our moon, Mars, invasive species, undomesticated  horses, human imagination, our genes and geography, cancer's  evolutionary tree, facial expressions, a "wiring diagram" of  the brain, human longevity, and more.  (Multiple Agencies)
     http://www.free.ed.gov/resource.cfm?resource_id=2088

Science of Spectroscopy:  How does a camera work? Also features a wiki-based effort to tell the story of spectroscopy  -- the use of light to study matter.  Find answers to  questions about the basic theory of light, energy, and the  electromagnetic spectrum.  What is light?  How is it created?  How does it affect matter?  What is energy?  Learn about  everyday applications of spectroscopy, including CAT scans, Mars exploration, MRIs, microwaves, sunscreen chemistry, the chemistry of vision, uses of lasers, and more.  (National Aeronautics and Space Administration)
     http://www.free.ed.gov/resource.cfm?resource_id=2096