Lesson 1:  Galaxy Clusters - A Historic Merger            Lesson 2:  Playing the Data Game Lesson 3:  Home, Home on the Range Lesson 4:  Check out the Curves on that Contour Lesson 5:  A Not So Minor Scale                                 Lesson 6: Hunters and Gatherers Lesson 7: And Now, Our Feature Presentation Lesson 8: Did you hear that noise? Lesson 9: Are You  SAbsolutelyure? Lesson 10: Contour-Mania! Lesson 11: The One Ring To Rule Them All Lesson 12: When it's All Said and Done

You will need a program called DS9 to complete the lessons in this unit. To download DS9, please go to this page and follow the directions. Student objectives for each lesson are establish specific skills students are exposed to in each lesson.   The glossary contains terms and concepts encountered throughout the unit that might require further explanation.. Teachers can access this page for an explanation of the unit, and ideas for implementation. Issues?  Try the troubleshooting page. If you cannot find the answer on the troubleshooting page, or would like to report any broken links, please send us an email.