In this article, the authors share how model lessons spaced throughout the year, connected by a single anchoring phenomenon, provided opportunities for teachers to build schema for complex science learning as they shifted between "learner hats" and "teacher hats." Descriptions of the authors' workshop sessions include…

Convening professionals--physically or virtually--is necessary but certainly not sufficient for meaningful collaboration and networking to occur. Professional development (PD) must be designed and carried out in ways that encourage a culture of sustained collegiality (Loucks-Horsley et al. 2003). This article presents seven principles for creating…