The ontological turn in the humanities and social sciences has prompted some scholars of education to shift their focus of inquiry away from questions of epistemology (i.e., knowledge) to metaphysical matters related to being and the nature of existence. In this paper, I turn to ontology and make an argument for integrating and explicitly teaching theories of immanence in teacher education courses. I argue that integrating and explicitly teaching theories of immanence in teacher education courses can radically reorient students’ thinking, (...) being, and doing, which can fundamentally change how they are able to see, perceive, and make sense of events that unfold in their classrooms. Using vignettes of two encounters at an Italian preschool, I think with theory (Jackson and Mazzei 2012; St. Pierre, 2008, Ringrose and Renolds 2014) to demonstrate how philosophies of immanence reorient thought and produce “a lively new ontology” in which “the world’s radical aliveness comes to light” (Barad 2007, p. 33). The theoretical concepts I use include political theorist Jane Bennett’s (2010) concept of thing power, along with physicist Karen Barad’s (2007) concepts of entanglement and intra-action. (shrink)