Helping to pave the way…. Aristotle 340 B.C Famous philosopher Said earth was round EVERYTHING IN THE UNIVERSE REVOLVES AROUND THE EARTH- “Geocentric.

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Presentation transcript:

Helping to pave the way…

Aristotle 340 B.C Famous philosopher Said earth was round EVERYTHING IN THE UNIVERSE REVOLVES AROUND THE EARTH- “Geocentric Model”

Eratosthenes Eratosthenes ( B.C.)- great Greek mathematician who determined the circumference (distance around) of the Earth using shadow observations. Click on Eratosthenes

Ptolemy A.D. Latitude & longitude Counted the stars Created star tables to help explorers (Columbus) Geocentric Model Ptolemy Aristotle and Ptolemy

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