实施物理课堂有效讨论,问题预设是关键。讨论问题的预设必须紧扣知识的重点和难点,在学生认知的“最近发展区”设置阶梯性问题,在学生思维的生长点预设讨论,创设多元、开放的讨论情境,敏锐捕捉课堂有价值的意外生成问题,充分讨论,成就精彩课堂。 Implementation of effective discussion in the physics classroom, the problem is the key to presuppose. The presupposition of discussion issues must be closely related to the key points and difficulties of knowledge, set up step-by-step questions in the “recent development zone” of student cognition, preset discussion at the growth point of students’ thinking, and create diverse and open discussion situations. Capture valuable and unexpected incidents in the classroom, discuss them thoroughly, and create exciting classrooms.