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1 教材内容的比较课例(一)、(四)采用人教版教材,另两个课例采用的是苏科版教材.按照人教版教材的安排,学生在学习“一次函数的图象”前,通过学习函数及正比例函数,已具备了必要的知识与经验,具备通过类比正比例函数的研究方法来探究一次函数的图象及其性质的能力与心理准备.苏科版教材在本节课之前没有安排正比例函数图象的学习内容,而是在本节课学习了一次函数后把它作为特例来处
1 Comparison of teaching materials (I) and (IV) Adopting the teaching materials of the People’s Education Press. The other two lesson examples are based on Su Ke textbooks. According to the arrangements of the teaching materials of the PE teachers, the students are learning the map of “a function”. Like "before, through the learning function and the proportion function, has the necessary knowledge and experience, has the ability and psychological preparation to explore the function of the image and the nature of a function through the analogy of proportionality function research methods. The content of the image of the proportional function was not arranged before this lesson, but it was treated as a special case after learning the function once in this lesson.