Author/s: Julie SaramaDouglas ClementsYear of Publication: 2017Publisher: Teachers College PressAPA Citation: Sarama, J., & Clements, D. H. (2017). Designing, scaling up, and evaluating comprehensive professional development based on learning trajectories. In P. Sztajn, P. H. Wilson & C. Edgington (Eds.), Learning trajectories-based professional development. New York, NY: Teachers College Press. Topic: Teacher Education