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在解决小学数学问题的过程中,我们往往需要把抽象的数学问题具体化,让学生更直观形象地理解问题,从而更好地解决问题。但是,数学学习的过程不是一成不变的,在有些特殊的情况下,我们还可以从抽象的角度找出思路,从而解决一些具体的操作问题,反而可以取得举一反三,事半功倍的效果。在四年级上册的教学中有这样一个问题:一个玻璃缸里有100毫升的液体,利用容量为70毫升和30毫升的两个没有刻度的容器,能不能将100毫升的液体
In the process of solving elementary mathematics problems, we often need to abstract the mathematical problems, so that students can understand the problems more intuitively and vividly so as to better solve the problems. However, the process of mathematics learning is not static. In some special cases, we can also find ideas from an abstract perspective so as to solve some specific operational problems. On the contrary, we can achieve the effect of multiplying the number of win-win situations with a multiplier effect. There is such a problem in the teaching of the fourth grade that 100 ml of liquid in a glass jar and two unscaled containers of 70 ml and 30 ml capacity can dispense 100 ml of liquid