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在中、小学数学的应用题中,工程问题占有重要地位,实际应用也很广泛。小学数学课本中的练习十六全属工程问题,而例题仅只一个。所以教师要重视这一例题的讲解。要让学生掌握工程问题的基本概念,教师必须突破把全工程当作“1”这一关键问题。“1”和“多”是相互对应的,又是相互联系、相互转化的。恩格斯说:“1和多是不能
In the application of mathematics in primary and secondary schools, engineering problems occupy an important position, the practical application is also very wide. Sixteen of the exercises in primary school mathematics textbooks are all engineering problems, but only one example is given. So teachers should pay attention to explain this example. In order for students to master the basic concepts of engineering problems, teachers must break the key issue of thinking of the whole project as “1”. “1” and “many” are corresponding to each other, but also interrelated and mutually transformed. Engels said: "One and many can not