Rachel Jansen is a Ph.D. student in the Computational Cognitive Science Lab. Her research is centered around math cognition and learning in adults using an online algebra tutor developed by her and her advisors. She is interested in learning more about the mental states of online learners to improve personalization and motivation. She also works with children in preschools and science museums in the hope of discovering how they develop an idea of what math is, or a "math concept."