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In this activity, students will interpret and analyze the information presented on the Evidence for Hidden Mass graph. They will observe trends in the graphs, and use it to determine if there is evidence for hidden mass. This is Activity 6b in the "Hidden Lives of Galaxies" information and activity booklet that was designed for use with "The Hidden Lives of Galaxies" poster. The booklet includes student worksheets and background information for the teacher.
This resource is located on page 41 of the PDF document.