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Sizing Up the Universe
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In this online interactive challenge, learners choose items to represent the Earth or solar system, then determine other items to represent the Moon, or Milky Way based on their relative size.
Handy Measuring Ratio
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In this activity, learners use their hands as tools for indirect measurement.
From the Internet to Outer Space
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In this activity, learners will use Google Sky to observe features of the night sky and share their observations.