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The students' blogs have been transferred to 8th grade.

by PRVI teacher: Rye 8th Team
Blog Entries

Eratosthenes
Space Facts
Eratosthenes was one of the first to find out that the Earth was round. The way he did it was that the sun would shine to the bottom of a well 2 times a year. So he had someone go to a different well on that day and count his steps. When he got there the sun only reached the side of the well. This showed that the earth was round because if the Earth was flat the sun would shine to the bottom. He then calculated it and found the circumference of the Earth.
Article posted September 30, 2009 at 12:15 PM • comment • Reads 33 • Return to Blog List
 
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