论文部分内容阅读
第五章 光的反射 新教科书中关于光的知识分作两章,第五章讲述有关光的反射的知识;第六章讲述关于光的折射的知识。这样每章的内容比较单纯,便于学生掌握。同旧课本相比,第五章内容的主要改动如下: 一、介绍了光源 作为“光现象”的开始,第五章的开头先介绍了光源。使学生知道,要看到物体,必须有光射入眼睛。这个知识对理解光现象是很重要的。例如,在理解平面镜成像、池水变浅、插入水中的筷子向上弯现象时,都要用
Chapter 5 Reflection of Light The knowledge of light in the new textbook is divided into two chapters. The fifth chapter deals with the knowledge of the reflection of light. The sixth chapter deals with the knowledge of the refraction of light. In this way, the contents of each chapter are relatively simple and easy for students to master. Compared with the old textbooks, the main changes in the contents of Chapter 5 are as follows: I. Introduction to Light Sources As the beginning of the “light phenomenon,” the light source was introduced at the beginning of Chapter 5. Make students aware that to see objects, there must be light into the eyes. This knowledge is very important for understanding the phenomenon of light. For example, to understand plane mirror imaging, shallow water, and chopped up chopsticks in water