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小学数学第十二册的正、反比例部分教材基本可以分为三部分:(1)正、反比例的概念的形成;(2)应用概念判断数量关系;(3)应用概念解应用题.(1)是(2)和(3)的依据,(2)和(3)是(1)的具体体现形式.从教材内容的各部分关系出发,进行教学时,应该以突出概念为主线,加强比较,注重联系,利于培养学生思维有序、思维有据的良好思维习惯和分析问题、解决问题的能力.
Primary and secondary mathematics, the twelfth volume of positive and negative textbook can be divided into three parts: (1) the formation of positive and inverse proportion of the concept; (2) the application of concepts to determine the quantitative relationship; (3) ) Is the basis of (2) and (3), (2) and (3) is the concrete manifestation of (1) .From the teaching content of the various parts of the relationship, teaching, should highlight the concept of the main line, to strengthen comparison , Pay attention to contact, help students to think in good order, well-thought-good habits of thinking and analysis, problem-solving skills.