![Image displaying that a typical lake has distinct zones of biological communities linked to the physical structure of the lake.](https://webarchive.library.unt.edu/eot2008/20090116063309im_/http://www.free.ed.gov/images/resources/0626.jpg)
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Water on the Web offers water science units and tools that help students understand and solve real...
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![Early Cretaceous period (120 Ma)](https://webarchive.library.unt.edu/eot2008/20090116063309im_/http://www.free.ed.gov/images/resources/0648.jpg)
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Teach the Earth offers hundreds of teaching activities, visualizations, and resources for teaching earth...
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![A group of very old tubeworms (Lamellibrachia luymesi and Seepiophila jonesi) living on the same piece of carbonate rock as large colonies](https://webarchive.library.unt.edu/eot2008/20090116063309im_/http://www.free.ed.gov/images/resources/0551.jpg)
![](https://webarchive.library.unt.edu/eot2008/20090116063309im_/http://www.free.ed.gov/images/transp.gif)
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Ocean Explorer provides 165 lesson plans developed to bring entire classrooms "on board" for exploration...
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![Most corals are made up of hundreds to hundreds of thousands of individual coral polyps like this one.](https://webarchive.library.unt.edu/eot2008/20090116063309im_/http://www.free.ed.gov/images/resources/discovery-kits.jpg)
![](https://webarchive.library.unt.edu/eot2008/20090116063309im_/http://www.free.ed.gov/images/transp.gif)
![](https://webarchive.library.unt.edu/eot2008/20090116063309im_/http://www.free.ed.gov/images/arro4.gif) |
NOAA Discovery Kits presents tutorials, lessons, and multimedia activities for learning about corals...
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