《纸》的教学实录与分析
2021-01-10张勇
张勇
摘要《纸》是三年级下册第四单元“身边的材料”第2课。本课围绕探究纸的特性安排了研究不同纸的吸水性、结实程度以及想办法做一只不渗水的纸船三个活动。顺应儿童的认知规律,本课拟定了如下教学目标:在比赛折纸船的游戏中,明晰实验规则;在探究纸的不同特性中,渗透做对比实验的方法;在改进实验的过程中,培养学生的批判性思维能力和创造能力。学生经历了发现问题,解决问题再到生成新的问题,最后尝试解决问题的过程。整节课,学生始终围绕着一个核心任务展开游戏、实验、想象,思维在一连串的活动中不断地提升。
关键词 纸的特性 实验 教学目标
中图分类号:G424文献标识码:ADOI:10.16400/j.cnki.kjdk.2021.05.013
The Teaching Records and Analysis of“Paper”
ZHANG Yong
(Haian Qutang Primary School, Haian, Jiangsu 226661)
Abstract: "Paper" is the second lesson of unit 4 "materials around" in Volume 2 of grade 3. This course focuses on exploring the characteristics of paper, arranging three activities: studying the water absorption and firmness of different papers, and trying to make a watertight paper boat. In accordance with children’s cognitive rules, the following teaching objectives are formulated: in the paper folding boat game, clear experimental rules; In order to explore the different characteristics of paper, the method of contrast experiment is used; In the pro? cess of improving the experiment, cultivate students’ critical thinking ability and creative ability. Students experi? ence the process of finding problems, solving problems, generating new problems, and finally trying to solve problems. Throughout the class, students always play games, experiment and imagine around a core task, and their thinking is constantly improved in a series of activities.
Keywords: characteristics of paper; experiment; teaching objects
《紙》是三年级下册第四单元“身边的材料”第2课。本课围绕探究纸的特性安排了研究不同纸的吸水性、结实程度以及想办法做一只不渗水的纸船三个活动。教材上的几个活动显得比较独立,缺少连贯性。为了使这三个活动能够联系得更紧密,突显课堂教学的流畅性和整体性,笔者借助“纸”将三个活动的顺序进行了适当的调整,巧妙地利用“折出一个不容易湿水的纸船”展开游戏、探究、创新等一系列活动。为了让三年级学生能够充分地体会并逐步掌握设计对比实验的精髓——控制变量,顺应儿童的认知规律,笔者拟定了如下教学目标:在比赛折纸船的游戏中,明晰实验规则;在探究纸的不同特性中,渗透做对比实验的方法;在改进实验的过程中,培养学生的批判性思维能力和创造能力。……
