Eliciting students' knowledge is an important first step in formative assessment that enhances students’ learning. Therefore, knowledge on teachers' elicitation practice can inform their formative assessment practice. This book is on secondary school science teachers’ perspectives on their elicitation practices during instruction. Eleven science teachers in different domains were videotaped as they taught their classes and immediately interviewed using the video stimulated recall technique that gave them a voice. These teachers shared their thought processes in eliciting students’ knowledge as well as challenges that impeded their elicitation practices. This book explores the teachers' voices in discussing their elicitation practices. It presents exemplars of elicitations in discussing the science teachers' practices and their perspectives. This book will serve as a reference for teachers in reflecting on their elicitation practices and in gaining insight on their formative assessment practices. The book will also serve as a resource for professional development that targets specific challenges in teachers' elicitation practice and in formative assessment in general.