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Date: 2012-02-09 15:43:32Elementary arithmetic Classical mechanics Physical cosmology Euclidean plane geometry Golden ratio Percentage Pi Mass Fraction Physics Mathematics Numbers | National Aeronautics and Space Administration NASA Explorer Schools Pre-Algebra Unit Educator Guide Solar System MathAdd to Reading ListSource URL: quest.nasa.govDownload Document from Source WebsiteFile Size: 1,68 MBShare Document on Facebook |