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一、教材分析代数式是苏科版七年级上册第三章的内容,本章主要包含字母表示数、代数式、代数式的值、合并同类项、去括号、整式加减及教学活动——月历中的数学。通过代数式表达数量关系和变化规律,体会模型的思想,建立符号意识,以利于学生逐步理解符号的使用是数学表达和数学思考的重要形式。二、学情分析七年级学生虽然在小学已经接触过简单的代数式。但是对它的认识比较肤浅,并且用字母表示数需要一定的抽象思维能力。
First, the textbook analysis Algebra is Su Ke version of the seventh grade on the third chapter, this chapter contains alphanumeric, algebraic, algebraic values, the merger of similar items, to parentheses, addition and subtraction and teaching activities - the mathematics in the calendar . Through algebraic expression of quantitative relationships and changes in law, understand the idea of the model, the establishment of symbolic awareness in order to facilitate students to gradually understand the use of symbols is an important form of mathematical and mathematical thinking. Second, academic analysis Although seventh grade students have come into contact with simple algebra in primary school. However, its understanding of the relatively superficial, and the number of letters requires a certain degree of abstract thinking.