On Wednesday, December 9, 2020 Christopher Dennis Nazelli, Ph.D. candidate in the Curriculum and Instruction program successfully defended his dissertation "Understanding Pre-Service Elementary Mathematics Teacher Learning in an Early Lesson Study Experience." Dr. Nazelli's committee members are Dr. Jennifer Lewis, major advisor; Dr. Steven Kahn; Dr. Asli Ozgun-Koca; and Dr. Deborah Zopf.