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复合应用题是小学数学教学中的重点和难点。二十多年的教学实践使我深深感到:指导学生分析好复合应用题的数量关系,是教学这部分内容的关键。现谈谈我的几点粗浅体会。一、类比总结,使学生不断加深对常用数量关系的理解。牢固掌握常用的数量关系,是分析复合应用题中数量关系的基础。现行小学教材中,总结了十种简单应用题,也就是十种简单的数量关系。这些数量关系,我不是要求学生死记硬背,而是通过儿童熟悉的事物、图形或类比,启发学生分析理解,用列表法总结归纳:
The problem of compound application is the key and difficult point in elementary mathematics teaching. After more than two decades of teaching practice, I deeply felt that guiding students to analyze the quantitative relationship between multiple application questions is the key to teaching this part. Now I talk about some of the superficial experience. First, the analogy summary, so that students continue to deepen the understanding of the relationship between the number of commonly used. Firmly grasp the number of commonly used relationship is the basis for the analysis of the quantitative relationship between composite application questions. The current primary school textbooks, summed up the ten simple application questions, that is, ten kinds of simple quantitative relationship. Instead of asking students to memorize these numbers, instead of asking students to memorize them, I use children's familiar things, graphics or analogies to inspire students to analyze and comprehend them.