I joined CEER, the Center for Engineering Education Research after two years of work in the Ebert-May lab. I am working on the AACR project (Automated Analysis of Constructed Responses) where we seek authentic ways to assess conceptual learning in large numbers of students. In the Ebert-May lab, I transformed a section of MSU's large-enrollment introductory biology to incorporate scientific practices, supporting deep conceptual learning, in a learner-centered environment. Trained as a mathematical modeler in ecology, I have developed a highly-effective one-semester course for undergraduates in mathematical modeling in biology. My research focuses on how undergraduates build expertise in biology, and how instructors can help them do that.