数形结合思想在初中数学教学中的应用与实践
2020-01-21朱振利
朱振利
【摘要】学科思想是学生掌握学科规律、形成核心素养的重要基础,在教学改革的背景下,初中数学教学中培养学生数学思想已经成为教师教学的首要任务。其中,数形结合思想作为初中时期学生学习数学所经常使用到的指导思想之一,有利于将数学知识具体化,教学价值愈来愈突出,受到了师生的广泛重视。本文将从初中数学教学现状出发,结合学生的发展需要,分析数形结合思想在实际教学中的应用,以期有效提升初中数学教学质量。
【关键词】数形结合;数学思想;初中数学;应用与实践
中图分类号:G633.6文献标识码:A文章编号:0493-2099(2020)33-0016-02
TheApplication and Practice of the Idea of Combination of Number and Shape in Ju‐nior Middle School Mathematics Teaching
(Wenyuan School in Laiwu District, Jinan City,China) ZHU Zhenli
【Abstract】Subject thinking is an important foundation for students to master the discipline rules and form core qualities. Under the background of teaching reform, cultivating students mathematics thinking in junior high school mathematics teach‐ing has become the primary task of teachers teaching. Among them, the combination of number and shape is one of the guid‐ing ideologies often used by students in junior high school learning mathematics, which is conducive to the specificization of mathematics knowledge, and the teaching value is becoming more and more prominent, which has been widely valued by teachers and students. This article will start from the status quo of junior high school mathematics teaching, and combine the development needs of students, analyze the application of the combination of number and shape in actual teaching, in order to effectively improve the quality of junior high school math teaching.
【Keywords】Combination of number and shape; Mathematical thinking; Junior middle school mathematics; Application and practice
當前,在素质教育改革的背景下,课堂教学愈来愈关注学生学科的思维品质和综合素养,新课程标准也对学生发展提出了一系列新的要求,因此,只看重分数的时代已经结束,传统的教学模式显然已不能够满足学生的发展需要。教师需要及时转变教学观念,结合数学学科的特点,将数字与图形巧妙地结合到一起,帮助学生克服理解障碍,并引发其学习兴趣,并在这过程中增强学生数学思维能力,实现学生综合素养的提升。
一、数形结合思想在几何图形中的应用
几何图形是数学学科的重要内容,与小学数学相比,初中几何的知识难度和深度都有所提升,尤其在计算方面,对学生的运算技能提出了更高的要求。从当前教学现状来看,求解几何图形某一边的长度或周长面积是常见的题型,也是学生出错最多的地方。……