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Discovery of Sound in the Sea

For Students 9th - 10th
Discover how animals use sound to communicate. Provides links to the uses of sound, effects of sound as well as sound production and reception.
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Graphic
Curated OER

Educational Technology Clearinghouse: Maps Etc: North America, 1916

For Students 9th - 10th
A map from 1916 of North America, Central America, Greenland, and the Caribbean to Puerto Rico showing land elevations, water depths, and isothermal lines of mean temperatures for January and July. The map uses color-contouring to show...

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