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在义务教育课程标准实验教科书《科学》五年级上册的《光的反射》一课的教学中,不仅要让学生了解和掌握光的反射原理及反射光的传播特点,更为重要的是,要让学生了解光的反射在科学和实际生活中的运用。如科学利用光的反射原理,使用激光反射器测量出地球到月球的准确距离为384403千米,从而解决了“月球离我们有多远”这个无法用尺子测量的难题。又如生活中人们巧妙地利用光的反射原理,给汽车安装上反光镜,驾驶员能从镜中清楚地观察到车窗外的情景及车后侧的空间,以保证行车的安全等。
In compulsory education course standard textbook science fifth grade “reflection of light” lesson, not only to enable students to understand and master the principle of light reflection and reflected light propagation characteristics, more importantly, to Let students understand the use of light reflection in science and real life. Such as the scientific use of light reflection principle, the use of laser reflectors to measure the exact distance of the earth to the moon 384403 km, thus solving the “how far the moon from us” can not be measured with the ruler problem. Another example is life people clever use of light reflection principle, to the car mounted on the mirror, the driver can clearly observe the window from the mirror scene and the back of the car space to ensure traffic safety.