Dr. Kate Melhuish received her PhD in mathematics education from Portland State University in 2015. She also has a BS and MS in mathematics. After completing her PhD, Dr. Melhuish spent a year working a postdoctoral research fellow for Teachers Development Group. Her research interests focus on two primary areas: student understanding and activity in advanced mathematics, and supporting teachers in promoting high-level reasoning in their classrooms. Dr. Melhuish is currently co-PI on a DRK-12 grant looking at the efficacy of a sustained PD model at the 3rd-5th grade level. Her secondary project is the development of models of student thinking in abstract algebra and design and maintenance of the Group Theory Concept Assessment, a measure meant to reflect student thinking in this area.