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This activity is about symbiotic relationships. After reading deep-sea diving log entries, learners will discuss the observations of the relationship between two kinds of organisms, hermit crabs and sea anemones. Learners will perform research to... (View More)

This is a lesson about the shape of objects in space. Learners will observe the surface of rotating potatoes to help them understand how astronomers use variations in reflective brightness to determine the shape of asteroids.

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