论文部分内容阅读
列方程解应用题是人教版小学数学第九册的重要内容,它是第五章简易方程这一章的重点,也是学生学习的难点。而“确定等量关系”是正确列出方程的依据,是列方程解应用题的关键。由于学生习惯于由已知到未知的算术思考方法,而对未知数与已知一样参与列式的方程解法一时难以接受,且常常受算术解法的束缚,不能准确地找到应用题中的等量关系。为此,我们教师要引导学生找准建立等量关系的突破口,即可抓住关键,突破难点,化难为易。现浅谈一下确定等量关系的几种
The application of column equation solution is an important part of the ninth edition of the mathematics edition of the PEP, which is the focus of chapter five of the simplified equations and also the difficulty of students’ learning. And “to determine the equivalent relationship ” is the basis for the correct list of equations, is the key to the column equation solution. Because students are accustomed to the unknown from the known mathematical thinking method, while the unknowns and known to participate in the equation equation solution unimaginable moment, and often by the shackles of the arithmetic solution can not accurately find the equivalent relationship between the application problem . To this end, we teachers should guide students to identify the breakthrough of the establishment of the same amount of relations, you can seize the key to break through the difficulties, the difficulty is easy. Now talk about to determine the relationship between the equivalent number