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《光的折射》是苏科版初中物理教材八年级上册内容,是在初步探究光现象之后的延伸和拓展。本节课教学目标有两个:(1)通过实验探究,了解光的折射现象及特点,能辨别折射现象,能用光的折射特点解释生活和自然界的一些光现象。(2)通过对有关光的折射现象的观察、猜测、检验、联想等活动,使学生感悟科学研究的方法。因此本节课的重点是通过实验来探究光的折射特点,难点是折射角和入射角的大小关系。实验教学的成败决定着能否顺利完成本节课的教学目标。去
“Refraction of light” is the eighth grade of Su Ke version of junior high school physics textbook content, is the initial exploration of the light after the extension and expansion. There are two teaching objectives in this lesson: (1) Through experimental exploration, we can understand the refraction phenomenon and characteristics of light, discern the phenomenon of refraction, and use the refraction characteristics of light to explain some light phenomena in life and nature. (2) Through the observation, speculation, test, association and other activities related to the refraction phenomenon of light, students can comprehend the method of scientific research. Therefore, the focus of this lesson is to experimentally explore the characteristics of light refraction, the difficulty is the angle between the angle of refraction and the angle of incidence. The success or failure of experimental teaching determines whether the teaching objectives of this lesson can be successfully completed. go with