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Torres, Sergio; Powers, Judith L. – Science Scope, 2009
In the exciting, "out of this world" activity described here, students measure the Earth using meter sticks while measuring their shadows in two distant locations. To obtain the size of the Earth, students discover the connection between the measurements of the shadows and a model of the spherical Earth following the method developed by…
Descriptors: Middle Schools, Geometric Concepts, Middle School Students, Models