These notes provide an evolving overview of research and practical guidance on strategies to implement remote teaching and learning, as well as strategies that combine virtual learning with in-class instruction. The document includes links to a variety of resources and reports on specific strategies and programs. It is important to recognize that this summary is not a complete review of the research literature on the full range of remote and blended learning strategies. It is intended as a work in progress to help inform planning and the assessment of what has worked, what has not worked, for whom, and under what conditions. This document may also inform decisions about how best to organize blended instruction in the event that New York City (NYC) schools need to phase in the reopening of physical classrooms in 2020-2021.