学生要学习的物理知识虽然是他人认识后留下来的,但对学生来说仍是未知的。因此教师的教学活动仍然是要引导学生自己去认识和发现这些知识,而不应是让学生来复制这些知识。对此,我们可以采用问题启发式教学方法,让学生自己在学习中发现问题或帮助学生去发现问题,这对于集中学生的学习注意力是至关重要的。当 Although the physical knowledge students want to learn is left behind by others, it is still unknown to the students. Therefore, teachers' teaching activities are still to guide students to recognize and discover these knowledge themselves, rather than let the students copy these knowledge. In this regard, we can use problem-based teaching methods, so that students find problems in their own learning or to help students find problems, which focus on the learning attention of students is crucial. when