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Explore Learning: Natural Selection Gizmo
You are a bird hunting moths (both dark and light) that live on trees. As you capture the moths most easily visible against the tree surface, the moth populations change, illustrating the effects of natural selection. (Free usage is...
Space Telescope Science Institute
Hubble Site: Behind the Pictures
At this site from HubbleSite, you can take a peek behind the scenes and discover the meaning of color in Hubble Images.
Other
The Rad Rider Web Site: Homepage
Use this site to meet the comic book superhero, Rad Rider. Read and listen to his comic book adventure to learn important bike safety tips. Then take the online quiz to see if you're ready to bike with Rad.
Curated OER
Etc: Clip Art Etc: Floor Plan of the Palace at Nimrud
One peculiarity is visible in all Assyrian buildings, namely, that all the chambers are very narrow in proportion to their length. It may, however, be accepted as established that the chambers were in general lighted by windows, which...
Curated OER
Etc: Plan of St Paul's Cathedral, London, 1675 1710
This is a plan of the St Paul's Cathedral in London, England. It is an example of English Renaissance architecture. The construction lasted from 1675 to 1710. Sir Christopher Wren designed the cathedral. "In plan, Wren's design was in...
Curated OER
Smithsonian Institution Archives: Marie Agnes Hinrichs (B. 1892)
Marie Agnes Hinrichs (b. 1892) received her Ph.D. in zoology from the University of Chicago in 1923. After teaching at the university from 1926 to 1934, Hinrichs received an M.D. from Rush Medical College and joined the faculties at...
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