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小学生解答应用题常发生错误。为了提高小学生解答应用题的能力,教学中,除了加强应用题结构、数量关系和解题思路的教学外,还应加强应用题验算方法的指导,并使其养成良好的验算习惯。下面谈谈应用题的八种验算方法。一、划线法一道应用题。学生列出了综合算式后,老师不要求立即算出结果,而是指导学生在综合算式下面划线,并标出各部分所表示的意思。例如:一项工程,甲、乙合做8天可以完成。若甲单独做要12天完成,乙单独做完这项工程比甲多
Pupils to answer questions often mistakes. In order to improve the ability of pupils to answer questions, in teaching, in addition to strengthening the teaching of the structure, quantity and problem-solving ideas of applied questions, we should also strengthen the guidance of the method of checking questions and make them develop good checking habits. Now talk about the application of the eight methods of checking. First, the application of crossed questions method. After the student lists the comprehensive formula, the teacher does not require the immediate calculation of the result, but instructs the student to underline the comprehensive formula and indicate the meaning of each part. For example: A project, A, B to do 8 days to complete. If A alone to do 12 days to complete, B alone to complete this project more than a