As countries worldwide aim to reform their education systems and improve teaching and learning, lesson study (LS), which originated in East Asia, has recently attracted great attention. In order for international educators and policy makers to better understand the history and the state of the art of LS in East Asia, this article introduces three…

University experts typically serve as knowledge sources for teacher learning. Experts in China are no exception. Nevertheless, minimal attention has been focused on knowledge flow between experts and teachers, and its contribution to teacher knowledge development. Drawing on the perspective of knowledge process across boundaries, this qualitative…