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教学内容:五年制小学课本数学第三册第100页例1。 教学目标:1.使学生认识两步计算应用题;了解两步计算应用题的结构。2.初步掌握找中间问题的方法。3.初步学会解答两步计算的应用题,提高学生分析问题、解决问题的能力。 教学过程: 一.复习 出示练习题:一辆公共汽车里有乘客36人,到胜利街车站下去18人,________?(先让学生演示数量间的关系,然后提出问题,并写出数量关系式、列式计算。) 师:这道应用题同学们只要直接将题中两个已知条件经过一步计算就解决了,这样的应用题叫做一步计算的应用题。这节课同学们开始学习两步计算的应用题(出示课题)。
Content: Five-Year Primary School Math Book III Page 100 Example 1. Teaching Objectives: 1. To enable students to understand two-step computing application questions; understand the two-step calculation of the structure of the application questions. 2. Preliminary grasp of the method of finding intermediate problems. 3 preliminary learn to answer two-step calculation of application questions, improve students' ability to analyze and solve problems. Teaching process: A. Review and produce Exercises: There are 36 passengers in a bus and 18 people go to Victory Street Station, ________ (let the students demonstrate the relationship between quantity, then ask questions and write quantitative relations , Column calculation.) Teacher: This application questions students directly as long as the two known conditions of the problem to be solved by a single step, this application is called a one-step calculation of the application. Students in this class started to study the applied two-step calculation (produce the subject).