数字化实验在中学化学科学探究教学案例中的开发和应用研究
发布时间：2018-10-22 12:56
【摘要】：数字化实验融入于中学化学教学已是必然趋势,数字化实验的应用必将拓宽实验的范围,对中学化学科学探究实验产生革命性的影响。随着数字化技术在教学中的广泛应用,学生的综合能力将得到提升。数字化实验的核心是数字技术与化学实验的深度融合。各种数字传感器运用于化学课堂教学,将会对化学课堂教学起到决定性的变革。为了加快数字化实验在中学化学教学中的运用,本文利用数字化技术开发探究性实验案例,进一步解释实验的本质,进一步加强学生的知识建构。本文采取文献法、实验法、调查法等多种方法进行研究和论证。论文大致内容概括为三个部分:首先是对课题背景的阐述及数字化实验的界定;其次是对数字化实验的开发及教学应用;最后是对数字化实验的应用效果进行论证和分析。论文的核心部分是基于数字化实验在中学化学科学探究教学案例中的开发和应用研究,笔者开发了五个数字化实验的案例,分别是探究氢氧化铝与氨水的反应、探究不同方法制取的氢氧化铝饱和溶液的电导率和浑浊度、探究碳酸钠和碳酸氢钠的p H随浓度的变化关系、探究盐酸和醋酸混合后的p H变化、探究苯酚与三价铁离子的显色反应。然后,分别对基于数字化实验探究的实验案例进行开发和教学设计,并进行实践和应用研究。
[Abstract]:It is an inevitable trend for digital experiment to be integrated into chemistry teaching in middle school. The application of digital experiment will certainly widen the scope of experiment and have a revolutionary influence on chemical science inquiry experiment in middle school. With the wide application of digital technology in teaching, students' comprehensive ability will be improved. The core of digital experiment is the deep fusion of digital technology and chemical experiment. The application of various digital sensors in chemistry classroom teaching will make a decisive change in chemistry classroom teaching. In order to speed up the application of digital experiment in chemistry teaching in middle school, this paper uses digital technology to develop inquiry experiment cases, further explain the essence of experiment, and further strengthen students' knowledge construction. In this paper, literature method, experimental method, investigation method and other methods are used to study and demonstrate. The main contents of the paper are summarized as follows: first, the background of the subject and the definition of the digital experiment; secondly, the development and teaching application of the digital experiment; finally, the demonstration and analysis of the application effect of the digital experiment. The core part of the thesis is based on the development and application of digital experiment in the case of inquiry teaching of chemical science in middle school. The author has developed five cases of digital experiment, which are to explore the reaction between aluminum hydroxide and ammonia, respectively. To explore the conductivity and turbidity of saturated solution of aluminium hydroxide prepared by different methods, to explore the relationship between pH and concentration of sodium carbonate and sodium bicarbonate, and to explore the change of pH after mixing hydrochloric acid and acetic acid. To investigate the color reaction of phenol with iron trivalent ions. Then, the experimental cases based on digital experimental inquiry are developed and teaching design, and the practice and application research are carried out.
【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
本文编号：2287219
[Abstract]:It is an inevitable trend for digital experiment to be integrated into chemistry teaching in middle school. The application of digital experiment will certainly widen the scope of experiment and have a revolutionary influence on chemical science inquiry experiment in middle school. With the wide application of digital technology in teaching, students' comprehensive ability will be improved. The core of digital experiment is the deep fusion of digital technology and chemical experiment. The application of various digital sensors in chemistry classroom teaching will make a decisive change in chemistry classroom teaching. In order to speed up the application of digital experiment in chemistry teaching in middle school, this paper uses digital technology to develop inquiry experiment cases, further explain the essence of experiment, and further strengthen students' knowledge construction. In this paper, literature method, experimental method, investigation method and other methods are used to study and demonstrate. The main contents of the paper are summarized as follows: first, the background of the subject and the definition of the digital experiment; secondly, the development and teaching application of the digital experiment; finally, the demonstration and analysis of the application effect of the digital experiment. The core part of the thesis is based on the development and application of digital experiment in the case of inquiry teaching of chemical science in middle school. The author has developed five cases of digital experiment, which are to explore the reaction between aluminum hydroxide and ammonia, respectively. To explore the conductivity and turbidity of saturated solution of aluminium hydroxide prepared by different methods, to explore the relationship between pH and concentration of sodium carbonate and sodium bicarbonate, and to explore the change of pH after mixing hydrochloric acid and acetic acid. To investigate the color reaction of phenol with iron trivalent ions. Then, the experimental cases based on digital experimental inquiry are developed and teaching design, and the practice and application research are carried out.
【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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