DESIGN AND IMPACT OF FLEXIBLE, ASYNCHRONOUS ONLINE VIDEO-BASED MATHEMATICS PROFESSIONAL DEVELOPMENT

In this article, we share the experimental research design and preliminary impact results from the Video in the Middle project, which is adapting existing face-to-face video-based mathematics professional development materials to online two-hour modules that can be used in flexible asynchronous formats: independent, locally facilitated, or developer facilitated. Preliminary research results indicate that teachers appreciated the variety of formats, found the modules useful and engaging, and learned to appreciate and use visual methods for solving problems, including using color to distinguish and highlight the relationship between numeric, algebraic, and geometric models. The benefits of this asynchronous PD became pronounced as the pandemic emerged during the research study and teachers found themselves shifting to remote instruction with little time to prepare.