Developing a proper view of the nature of science (NOS) amongst teachers and students has been the goal of science education for decades. This article discusses an innovative activity designed for training preservice science teachers on NOS. We endorse an approach according to which several aspects of NOS can be explicitly discussed and explained. This activity is an extended version of a tangram activity introduced by Choi (2004). Aside from introducing NOS elements covered by Choi, our tangram activity also introduces the following elements: (1) theories are valid products of science, (2) the role of subjectivity and bias in science, (3) the importance of scientific community in science, (4) prediction is part of science, and (5) creativity and imagination are important in science. The activity can be used decontextualized (i.e., as a stand-alone lesson) in science methods classes, but it also has high potential to be contextualized within content related to the history of science. In this article, we provide procedures for using an analogy activity (the tangram activity) and explain how to connect each part to NOS elements. This activity was tested successfully in several science methods courses, a NOS course, and two professional development workshops.