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Educational Level:
Grade 3  
Instructional Strategies:
Role playing  
Guided inquiry  
Topics/Subjects:
Solar system  
Resource Type:
Student guide  
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Satellite images of Mercury and Mars are used to illustrate craters and generate a discussion about their cause. After comparing those images with one of Earth, students explore the reason for the lack of visible craters on our planet. The abundance... (View More)

Audience: Elementary school
Materials Cost: 1 cent - $1 per student
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