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Interactive simulation  
Student guide  
Topics/Subjects:
Solar system  
Earth, moon and sun  
Instructional Strategies:
Generating and testing hypotheses  
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Learners model how an ocean of molten rock "magma" produced the Moon's oldest rocks. Dense materials in the molten mixture sank, while the least dense materials floated to the top and cooled to form the light-colored areas we see on the Moon today.... (View More)

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