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|Bob Urschel, Valparaiso, IN|
|The figure-8 path that the sun makes in the sky is called the analemma. This site explores the paths of the sun and the earth, with investigations into the effects and the math of their elliptical orbits and earth's tilt, and a summation.|
|Levels:||High School (9-12), College|
|Math Topics:||Equations, Data Analysis, Astronomy|
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