四重表征在中学电化学教学中的应用

发布时间：2018-03-28 11:10

本文选题：四重表征　切入点：中学化学　出处：《合肥师范学院》2017年硕士论文

【摘要】：我国教育秉承立德树人的宗旨,发展学生核心素养,致力于培养能够胜任社会的未来接班人。通过化学教育培养化学学科素养是培养学生核心素养的一个重要途径。化学学科素养的宏微结合正是四重表征的两个表征方式,因此从四重表征出发研究中学化学教学有利于培养学生的核心素养。本研究以四重表征思维方式作为指导,研究中学电化学的整体知识框架,构建电化学知识体系,通过文献查阅和实际调查,收集数据,分析目前四重表征在中学电化学教学中的应用情况,分析得出优化的教学策略,以期其积极意义能促进中学化学教学的发展。结合具体的教学内容,四种表征之间相互转换、协调配合,帮助学生了解化学知识,从宏观物质或宏观现象形成宏观表征,从微观结构呈现微观表征,在宏观、微观基础上识记物质的符号,形成符号表征,通过曲线表示了解化学反应过程,由此形成对化学物质或化学变化的整体认识。通过调查分析发现少数学生在四重表征之间存在认知障碍,部分学生对四重表征的转换不是特别熟练等问题。对以上问题做了初步分析,并提出改善的教学策略:组织实物教学,增加学生宏观表征的体验;合理开发使用微观教具,增强微观结构的可视化;厘清化学符号的内涵,强调符号表征的过渡作用;结合手持技术,利用曲线表征帮助学生理解化学反应过程;强化在四重表征间进行转化的意识和能力。并且设计了教学案例,供教师和研究者思考。利用四重表征进行电化学教学对帮助学生理解知识体系,培养科学探究能力和化学学科素养,将理论应用于实践都起着重要的作用。
[Abstract]:China's education adheres to the purpose of building up people and developing students' core accomplishment. It is an important way to cultivate students' core literacy through chemistry education. Therefore, the study of chemistry teaching in middle school from the perspective of quadruple representation is beneficial to the cultivation of students' core literacy. Under the guidance of the thinking mode of quadruple representation, this study studies the overall knowledge framework of electrochemistry in middle schools and constructs the electrochemical knowledge system. Through literature review and actual investigation, collecting data, analyzing the application of quadruple representation in electrochemical teaching in middle school, and analyzing the optimized teaching strategy, In the hope that its positive significance can promote the development of chemistry teaching in middle school, combining with the specific teaching contents, the four representations can be transformed into each other, coordinate with each other, help students to understand chemical knowledge, and form macroscopic representation from macroscopic material or macroscopic phenomenon. From the microscopic structure to present microscopic representation, on the macro and micro basis to remember the symbol of the substance, form symbolic representation, through the curve to understand the chemical reaction process, As a result, an overall understanding of chemical substances or chemical changes was formed. Through investigation and analysis, it was found that a small number of students had cognitive disorders between the four representations. Some students are not particularly proficient in the conversion of quadruple representation. This paper makes a preliminary analysis of the above problems, and puts forward some improved teaching strategies: organizing physical teaching, increasing students' experience of macroscopic representation, developing and using micro teaching aids reasonably, Enhancing the visualization of microstructure, clarifying the connotation of chemical symbols, emphasizing the transitional role of symbolic representation, using curve representation to help students understand the chemical reaction process, combining with handheld technology; To strengthen the consciousness and ability of transformation between four representations, and design teaching cases for teachers and researchers to think. Electrochemical teaching with quadruple representation can help students understand the knowledge system. It plays an important role to cultivate scientific inquiry ability and chemistry literacy and to apply theory to practice.
【学位授予单位】：合肥师范学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：G633.8

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