This article presents a unit of study in which students examine skeletons and draw conclusions from the evidence they find in a simulated mass grave. The activity involves the foundation of forensic anthropology--interpreting the structure of skeletal remains to determine sex, age, height, and possible cause of death. Working through a series of lessons, students gather, interpret, and draw conclusions from evidence in the same way scientists do. These skills reflect the nature of science and are an essential part of science instruction (DeBoer 2006). As the unit progresses, students engage in scientific discourse by constructing explanations and arguing from their analysis of evidence.