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物理学是一门以实验为基础的学科,而物理教学中的演示实验的作用尤为重要,不论是展示现象、得出概念还是寻找规律,都有着其他教学方式不可取代的作用。在初中物理教材中,光的反射定律的演示实验有改进的必要,需要增加实验的直观性和可视性,提高课堂学生实验的效果和效率。若让激光笔的激光斜射入掺入少量白色牛奶的水中,可以看到清晰的、真实的光的传播路径,直观地得出光的反射定律,这样提高演示实验的可观测性,学生便于观察,学习兴趣也随之提高。
Physics is an experiment-based discipline. The role of demonstration experiments in physics teaching is especially important. Whether it is presenting phenomena, drawing concepts or finding laws, physics has an irreplaceable role in other teaching methods. In junior high school physics teaching materials, the demonstration experiment of light reflection law needs to be improved, and the intuition and visibility of experiment need to be increased to improve the effect and efficiency of experiment in classroom. If the laser pen laser oblique into a small amount of white milk mixed with water, you can see a clear and true path of light transmission, intuitively derived light reflection law, so to improve the observability of demonstration experiments, students easy to observe, Interest in learning also increased.