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Life Size: What's in a microbe?
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In this activity on page 3 of the PDF, learners visualize the relative size and structural differences between microbes that have the potential to cause disease.
Transit Tracks
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In this space science activity, learners explore transits and the conditions when a transit may be seen.
Eclipse: How can the little Moon hide the giant Sun?
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In this activity, learners explore how distance can affect the way we perceive the size of an object.
Scale Models
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In this activity, learners explore the relative sizes and distances of objects in the solar system.