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在初中,光的基础知识与日常生活联系十分密切,教好这一章对培养学生们兴趣和能力都有重要意义.因此我们在教法上做了以下几点改进,收到较好效果. (一)加强实验,培养学生的兴趣和能力除了做好教材上的实验外,我们增加了一些实验,穿插在讲课之中.例如在讲平面镜成象时,我们让每两个学生组成一组,发给他(她)们一块薄玻璃,两枚大头针和一张白纸.首先请学生将玻璃坚立在白纸上面(如图1),沿玻璃一边在纸上画一条直线
In junior high school, the basic knowledge of light has a close connection with daily life. It is important to teach this chapter to cultivate students’ interest and ability. Therefore, we have made the following improvements in teaching methods and received better results. (1) Strengthen experiments to cultivate students’ interests and abilities Apart from doing a good job in teaching materials, we have added some experiments that are interspersed with lectures. For example, in the case of plane mirror imaging, we have a group of two students each. Send him or her a thin glass, two pins, and a blank sheet of paper. First, ask the students to stand on top of the white paper (Figure 1) and draw a straight line along the glass.