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据调查,农村数学教师对算术方法解应用题的意识并不强,潜心研究的较少,不能运用自如。从根本上来说,教师对算术方法是列代数式的基础,是学好代数的最基本要素这一点还理解不深,忽视算术方法就忽视了学生思维方式的培养,就形不成系统的数学学习体系。教师不理解算术方法的简便和实用,不理解算术方法更适合于小学生的思维习惯,就谈不上深刻领会算术方法的妙处。事实上算术方法有着代数方法无可比拟的作用。下面举例来说明,以求对数学教师有所启示。问题1:一项工程甲独做10天完成,甲乙合作3天后,由乙独做11天完成。乙单独完成此项工作需要几天?本题方程求解,若设乙单独做需要x天,则每天能完成
According to the survey, rural math teachers’ awareness of the application of arithmetic methods solution is not strong, with little painstaking research, can not be used freely. Fundamentally, teachers are algebraic algebra based on the mathematical method is to learn the most basic elements of algebra this point is not understood, ignoring the neglect of mathematical methods neglect the cultivation of students’ thinking, the system can not form a mathematical learning system. Teachers do not understand the math method is simple and practical, do not understand the arithmetic method is more suitable for the thinking habits of primary school students, not to mention the profound understanding of the beauty of arithmetic methods. In fact, arithmetic methods have an incomparable effect on algebraic methods. The following examples to illustrate, in order to make some inspiration to math teachers. Question 1: A project alone to do 10 days to complete, A cooperation after 3 days, by the B alone 11 days to complete. B alone to complete this work a few days? The problem equation to solve, if B alone need to do x days, the day can be completed