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一、说教材:在数学教材中,应用题教学是一个难点。长期以来,教师认为应用题难教,学生认为应用题难学,因而现行的小学数学教材,把两步应用题的教学分两个阶段进行。第一阶段是两步应用题的初步认识,这一阶段学生已掌握了两步应用题的结构,知道解答两步应用题的关键是寻找中间问题;第二阶段是在此基础上继续学习两步应用题。本节的两步应用题,是在第三册的基础上,继续学习含有三个已知条件的比较容易的两步应用题,为以后学习含有两个已知条件的两步应用题打下基础。1.本节教学内容是:九年义务教育五年制数学第四册110页例1,完成“做一做”中的题目和练习二十九中的第1～2题。2.根据大纲和教材对本节的教学要求,结合学生实际,我
First, to teach textbooks: in mathematics teaching materials, application problem teaching is a difficult task. For a long time, teachers think that the application of the title difficult to teach, students think that the application of the title is difficult to learn, and therefore the current primary school mathematics textbooks, the two-step application of teaching in two stages. The first stage is the initial understanding of the two-step application questions, students have mastered the structure of two-step application questions, know the key to answer the two-step application questions is to find the intermediate problem; the second stage is to continue learning two Step application questions. The two-step application of this section is based on Volume 3 and continues to learn the easier two-step questions with three known conditions, laying the groundwork for a later study of a two-step question with two known conditions . 1. The content of this lesson is: Example 1: Complete the questions in “Doing One Doing” and Questions 1 ~ 2 in Exercise 29 of the nine-year compulsory education. 2. According to the outline and teaching materials of this section teaching requirements, combined with the actual student, I