We discuss how an innovative field experience model initially developed at Indiana University - Bloomington (IUB) is adapted for use at two other institutions. The teacher preparation programs at the two adapting universities not only differ from IUB, but also from each other with respect to course structure and student population. We begin with describing the original model, referred to as Iterative Model Building (IMB), and how it is designed to incorporate on a variety of research-based teacher education methods (e.g., teaching experiment interviews and Lesson Study) for the purpose of supporting preservice teachers with constructing models of children’s thinking, using this information to inform lesson planning, and then participating in a modified form of lesson study for the purpose of reflecting on changes to the lesson taught and future lessons that will be taught in the field experience. The goal of these combined innovations is to initiate the development of preservice teachers’ knowledge and skill for focusing on children’s scientific and mathematical thinking. We then share how we utilize formative assessment interviews and model building with graduate level in-service teachers at one institution and how the component of lesson study is adapted for use with undergraduate preservice teachers at another institution. Finally, we provide recommendations for adapting the IMB approach further at other institutions.