Students use a provided list of events/discoveries in astronomy to create a timeline on adding machine tape. Students can choose the length of the timeline. They are instructed how to create a scaling factor. They can choose 20 events from a list of 35 and can add 3 of their own. Students are instructed how to create the timeline and then to do additional research to add details or a brief summary of each of the 20 events/discoveries they chose to add to their timeline. A 3-element/4-point rubric is included (Scaling factor, timeline, lab completion).