为突破“探究凸透镜成像规律”这一难点,特设置了“一滴水看世界”实践作业,以此为情境,由像的性质分类出发,有效展开了“探究凸透镜成像规律”实验的每一个环节。这种利用课外作业培养学生实践意识的做法,有助于突破教学难点,有利于激发学习兴趣。 In order to break through the difficult problem of “exploring the law of imaging of convex lens”, we set up a practical operation of “a drop of water to see the world” as a context, starting from the classification of the image, and effectively explored the “law of convex lens imaging ”Every aspect of the experiment. This practice of using extracurricular homework to cultivate students’ practical awareness helps to break the teaching difficulties and stimulate the interest in learning.