The document discusses facilitating lesson study discussions. It describes observing a research lesson using frameworks to guide observations. The facilitator will then demonstrate a post-lesson discussion focusing on six elements: the key question, instructions between desks, polishing, turning point of the lesson, summing up, and board writing. Professional learning goals are discussed to guide observations and the post-lesson discussion. An example format of observation-interpretation-question is provided for observers to share findings. The difference between post-lesson and lesson refinement discussions is defined.