ESS1-1
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Develop and use a model of the Earth-sun-moon system to describe the cyclic patterns of lunar phases, eclipses of the sun and moon, and seasons.
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ESS1-2
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Develop and use a model to describe the role of gravity in the motions within galaxies and the solar system.
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ESS1-3
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Analyze and interpret data to determine scale properties of objects in the solar system.
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