Leverage formative assessment in mathematics every single day. For fans of the bestselling book The Formative 5: Everyday Assessment Techniques for Every Math Classroom comes this updated and expanded edition for understanding and implementing highly effective, research-backed formative assessment techniques into seamless, daily practice with students in grades K-12. This book serves as an interactive guide that steers teachers toward successful implementation of the formative five techniques of observation, interviews, Show Me, hinge questions, and exit tasks. The updated guidebook offers: more than 120 minutes of video examples of the five techniques in action in real K-12 classrooms, showing teachers not just what to do but how to do it; an engaging format with built-in reflection exercises and activities that foster individual professional learning and promote PLC study through discussion and collaboration; an explicit emphasis on providing effective and timely feedback to students while harnessing student strengths throughout teaching and learning; and comprehensive responses to teachers' frequently asked questions that have surfaced since the publication of the first book. The research is clear - the authors' five formative assessment techniques lead to greater attention to planning, stronger instruction for teachers, and better achievement for students. This book is a truly engaging resource that helps mathematics teachers and instructional leaders engage in classroom-based formative assessment with precision, intentionality, and ease.