In most institutions, women's studies courses employ feminist pedagogy in a triad model of equal parts research, theory, and praxis. The decentralization of the professor as the source of knowledge is often fundamental to women's studies classroom culture. Students are encouraged to take an active role in "claiming" their education, taking responsibility for themselves and the learning process. Women's studies programs and courses are designed to explore the intersectionality of gender, race, sexuality, class and other topics that are involved in identity politics and societal norms through a feminist lens. Women's studies courses focus on a variety of topics such as media literacy, sexuality, race and ethnicity, history involving women, queer theory, multiculturalism and other courses closely related. Faculty incorporate these components into classes across a variety of topics, including popular culture, women in the economy, reproductive and environmental justice, and women's health across the lifespan.