This performance assessment asks students to analyze three historical sources - a picture and two documents - providing different perspectives on the Boston Massacre in 1770. Students are asked to identify similarities and differences in the points of view presented, consider what each source reveals about the thinking of British soldiers and colonial patriots during the event, and explain why it is important to compare multiple sources when studying history. The assessment provides a framework to guide students through close examination of the sources and development of an evidence-based understanding of the event from more than one perspective.