Filters: Your search found 2 results.
Topics/Subjects:
Stars, nebulae and galaxies  
Instructional Strategies:
Generating and testing hypotheses  
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In this activity, students examine the first line of evidence, galactic motion, for the notion of an expanding universe. By examining the spectrum of light from a galaxy, students can determine whether a galaxy is moving toward or away from us, and... (View More)

Audience: Middle school, High school
Materials Cost: Free

This is an activity about size, distance, and perspective. Learners will observe two objects of the same size placed at different distances, and they will observe two objects of different size placed at varying distances. This concept is then... (View More)

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