This course introduces the philosophical concept of representation and focuses on visual representations in science. It takes an epistemological approach to the roles of visual representations in the formation of scientific knowledge. Visual representations are important vehicles for scientific observation, reasoning, instruction, and communication. This course starts by introducing the core concept of the semester, namely representation. An overview of philosophical discussions of the relationship between representation and the epistemology of science follows the introduction. Then, the course guides the students through a series of historical and contemporary cases on the intertwinement of representing practices and knowledge production, showing how the values and virtues of scientific knowledge production are embedded in representations. In addition to delivering philosophical concepts, this course provides the students with training in both academic and transferable skills. The former includes academic discussion, research ethics, and academic writing. The latter includes critical thinking, teamwork, and professional communication skills. The students are expected to participate in discussions and in-class exercises actively.