Before Watching
           
          
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                Have students locate Buenos Aires and Santiago on a map of South
                America and trace Stardust's route between them over the
                Andes range. How high is the range in that area? What
                considerations would there be in placing an airport so close to
                the mountains?
               
             
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                As students watch, have them chart information about each piece
                of evidence and possible conclusions.
               
             
           
          
            After Watching
           
          
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                In the program, investigators originally had one idea of what
                might have occurred and then modified that idea as new evidence
                was found. Ask students for an example of a time when their
                initial conclusions about something changed based on their being
                open to new facts or more logical reasoning. Have them consider
                situations such as when they met a new person who seemed
                unfriendly, but turned out just to be shy. Or an experiment they
                may have done recently in which their conclusions changed based
                on their results.
               
             
           
          
          
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