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本文以一道试题为例,在剖析其解法的同时,谈谈如何教会学生思考.一、试题解析题目(2010年重庆中考)含有同种果蔬但浓度不同的A、B两种饮料,A种饮料重40千克,B种饮料重60千克.现从这两种饮料中倒出一部分,且倒出部分的重量相同,再将每种饮料所倒出的部分与另一种饮料余下的部分混合.如果混合后的两种饮料所含的果蔬浓度相同,那么从每种饮料中倒出的相同重量是多少千克?
In this paper, an examination of an example, in the analysis of its solution, at the same time, talk about how to teach students to think.A first test resolution problem (2010 Chongqing test) containing the same kinds of fruits and vegetables but different concentrations of A, B two drinks, A beverage Weighing 40 kilograms and weighing 60 kilograms of B. The portion of the two drinks is now decanted and the weight of the portion dispensed is the same, and the portion of each beverage poured is mixed with the remainder of the other beverage. If the mixed two drinks contain the same concentration of fruits and vegetables, what is the equivalent weight poured from each drink?