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教学内容:青岛版《义务教育教科书·数学》四年级上册第80页。教学目标:1.经历用韦恩图表示重叠问题的探究过程,体验韦恩图产生的必要性。2.借助直观图理解韦恩图中每一部分的含义。3.利用集合的思想方法思考和解决简单的实际问题。4.在观察、操作、交流、猜测等活动中感受数学与生活的密切联系,体验数学在生活中的价值和学习的乐趣。教学重点:经历用韦恩图表示重叠问题的探究过程,利用集合的思想方法解决简单的重叠问题。教学难点:理解韦恩图的意义,建构
Teaching content: Qingdao version of “compulsory education textbook mathematics” fourth grade on the first 80. Teaching Objectives: 1. Experience Wayne diagram that overlap the inquiry process, experience the necessity of Wayne diagram. 2. Understand the meaning of each part of Wayne diagram with the aid of the visual picture. 3. Think and solve simple, practical problems using the set of thought methods. 4. In the observation, operation, exchange, guess and other activities to experience the close relationship between mathematics and life, to experience the value of mathematics in life and learning fun. Teaching Focus: Experience through the Wayne diagram that overlap the inquiry process, the use of a set of ideas to solve simple overlapping problems. Difficulties in teaching: understanding Wayne diagram meaning, construction