“光”单元解读与教学建议

Interpretation of "Light" Unit and Teaching Suggestions

教科版《科学》五年级上册的第一单元"光",以研究光的传播特点为主要线索,让学生认识光这种能量的表现形式。本单元引导学生认识光源,研究光在空气中沿直线传播的现象,以及光在行进过程中遇到其他透明、半透明和不透明物体时传播路线发生的变化,探索光的传播规律,认识"光沿直线传播,光的折射、反射现象",了解光与自然现象及人类生产生活的联系。课程标准中的内容要求,指向光在传播过程中发生的现象和对这些现象的解释,由此引导学生形成对光的一些基本认知。

The first unit"light"in the first volume of grade 5 of Science Edition of education and Science Edition takes the study of the propagation characteristics of light as the main clue to let students understand the expression form of light energy.This unit guides students to understand the light source,study the phenomenon of light propagating along a straight line in the air,and the changes in the propagation route of light when it encounters other transparent,translucent and opaque objects,explore the propagation law of light,understand"light propagating along a straight line,light refraction and reflection",and understand the relationship between light and natural phenomena and human production and life.The content requirements in the curriculum standard point to the phenomena and explanations of light in the process of transmission,so as to guide students to form some basic cognition of light.