一、教材分析有机化合物的学习不同于无机化合物的学习,有其独特的学习方法。学习有机化合物最大的特点就是要从结构出发,结构决定性质,性质反映结构。《乙烯》是高中化学必修二第三章第二节的教学内容,是不饱和烃烯烃的代表物。在此之前,学生学习了甲烷和烷烃的性质,对有机化合物有了初步的认识,能初步认识“结构与性质”的关系,但是需要进一步强化认识,而乙烯是非常典型的反映“结构与性质”关系的一节内容,授课之前应该在教学设计上狠下功夫,尝试使学生自己通过乙烯的结构特点分析其性质并 First, textbook analysis Organic compound learning is different from the study of inorganic compounds, has its unique learning methods. Learning organic compounds is the biggest characteristic from the structure, structure determines the nature of the nature of the structure. “Ethylene” is a teaching content of the second quarter of Chapter III of the compulsory secondary chemistry, is a representative of unsaturated hydrocarbon. Prior to this, students learned about the properties of methane and alkanes, got a preliminary understanding of organic compounds and got a preliminary understanding of the relationship between structure and properties, but they needed to be further strengthened. However, ethylene is a very typical reflection of " Structure and nature of the relationship between the content of a teaching design should be hard before teaching, trying to make students themselves through the structural characteristics of ethylene to analyze its nature and