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内容:五年制小学数学第九册第58页例5。教学目的:1.根据整数工程问题的解法、基本数量关系和结构,帮助学生加深理解工程问题的特点。 2.要求学生掌握解答这类特殊工程问题的方法,能比较熟练地分析数量关系,提高解答应用题的能力。教学重点:学会分析基本数量关系,结合分数意义找出工作总量“1”。 教学难点:根据学生的认知结构,理解这类题的工作总量、工作效率。 教学过程:
Content: Five-Year Primary Math No. 9 Page 58 Example 5. Teaching Objectives: 1. According to the integer engineering solutions to the problem, the basic relationship between the number and structure to help students better understand the characteristics of engineering problems. 2. Students are required to master the method of solving this special engineering problems, can more quantitative analysis of the relationship between the number of questions to improve the ability to answer questions. Teaching focus: learn to analyze the relationship between the basic quantity, combined with the meaning of the score to find the total amount of “1”. Difficulties in teaching: According to the cognitive structure of students, understand the total amount of work on such questions, work efficiency. Teaching process: