This session is part of R-1-1 Math Now Professional Learning Opportunities, where participants can engage in the session anytime, anywhere. In this asynchronous session, participants will engage in interactive asynchronous learning tasks using Google Slides. Participants will build their capacity to facilitate formative assessments in the classroom in an online or face-to-face learning environment. This session focuses on the power of using formative assessment strategies to build on student understanding and to guide instruction toward student mastery of the mathematics learning goal. After participants have interacted with the content throughout the session and completed the form at the end, they will earn 2.0 CPE.