在初中物理光学知识中,“凸透镜成像规律及其应用”是学生感到头疼的难点,教师要采取行之有效的教学方法和科学的教学策略,对教学过程进行妥善的处理.科学的教学策略就是引导学生参与教学过程,主动获取知识,乐于探究,课堂活动权、发言权留给学生.一方面注意问题情境的创设,激发学生的学习兴趣,使学生形成积极主动的学习态度; In the junior middle school physics optics knowledge, “convex lens imaging rules and its application ” is a difficult headache for students, teachers should adopt effective teaching methods and scientific teaching strategies, to properly handle the teaching process. Strategy is to guide students to participate in the teaching process, take the initiative to acquire knowledge, willing to explore, classroom activities, the right to speak to the students.On the one hand pay attention to the creation of the problem situation, to stimulate students interest in learning so that students form a proactive attitude toward learning;