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Searched for: GEM Subject is Social studies -- Geography
Results 646 - 650 of 667
Created by Lang Moore, Bill Mueller and David Smith for the Connected Curriculum Project, the purpose of this module is to establish the meanings of gradient and directional derivative in the context of a contour map of...
Wetlands went through a hard time in the 19th and much of the 20th centuries as they were summarily drained and used for real estate development. Today, scientists, planners, and recreationists are well aware of the...
The St. Lawrence Seaway connects the Atlantic Ocean to the Great Lakes, and it was completed in 1959. This website details the activities of the Seaway System, and visitors with an interest in transportation and public...
Created by the National Aeronautics and Space Administration (NASA), the purpose of this site is to provide a place where the public can obtain new satellite imagery and scientific information about our home planet. The...
This web page, created by David P. Stern, describes observations that show the earth is a sphere and the history of these observations. The round shape of the Earth may be inferred from the existence of a horizon at...
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