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大家知道,一道应用题,由于背景复杂,设置的情境状态多,数量与数量之间的关系多,构成了数量量多而复杂的关系。同一种数量有时需要用不同的表达方式进行表达。各情境状态间同一个数量的关系,有时是直接、明显的,有时是间接、隐蔽的。列方程时,必须善于将文字语言、符号语言、图形语言等进行转换。分析题目时,需要选用合适的表征方式:如分类列表、直译、图示、式子等。由于应用题的这些特点,决定学生必须具备一定的有序分析问题的能力,有序寻找数量间关系的能力,利用数学模型有序进行数学思考的能力。然而,在实际列方程解应用题的教
We all know that an application problem, due to the complex background, set the situation and more states, the relationship between quantity and quantity, constitute a large number of complex relationships. The same quantity sometimes needs to be expressed in different ways. The same number of relationships between situations and situations is sometimes direct, obvious, and sometimes indirect and hidden. Column equations, must be good at the text language, symbolic language, graphics language conversion. Analysis of the topic, you need to select the appropriate representation: such as classification list, literal translation, icon, formula and so on. Due to these characteristics of the application questions, students are required to have the ability to orderly analyze the problems in an orderly manner, the ability to orderly look for the relationships between quantities, and the mathematical thinking that can be used to orderly use the mathematical models. However, in the practical application of column equations solution to the problem of teaching