论文部分内容阅读
教学内容:青岛版三年级上册64—66页内容教学目标:1、通过摸一摸、描一描、指一指、量一量等活动,使学生感知并理解周长的含义。2、通过观察、测量和计算等活动,在发展学生空间观念的同时,渗透“化曲为直”的数学思想。3、培养学生合作探究能力和交往合作意识以及良好的学习习惯。教学重、难点:理解周长的含义教学过程:一、联系生活,初步感知周长。(课件出示美丽的校园)二、动手操作,认识周长1、摸一摸(摸数学课本的周长)2、找生活中物体表面的周长摸一摸。
Teaching content: Qingdao version of the third grade on the 64-66 page Teaching Objectives: 1, by touching, depicting a stroke, refers to the amount of a measure, and other activities to enable students to perceive and understand the meaning of circumference. 2, through the observation, measurement and calculation activities, in the development of students’ space concept at the same time, infiltrate “inflectional straight ” mathematical thinking. 3, develop students’ ability to explore cooperation and exchanges and cooperation and good learning habits. Teaching heavy, difficult: the meaning of understanding the perimeter Teaching process: First, contact life, the initial perception of circumference. (Courseware to show beautiful campus) Second, hands-on operation, understanding perimeter 1, touch (touch mathematics textbook perimeter) 2, find the circumference of objects in the living touch.