中学化学定量实验应用的案例研究

发布时间：2018-04-16 15:29

本文选题：定量实验 + 定量意识　；参考：《南京师范大学》2015年硕士论文

【摘要】：定量实验是中学化学实验的重要组成部分,定量实验对培养中学生的科学素养有着重要意义,尤其在培养中学生的定量意识和定量能力方面有着定性实验所不能替代的功能。然而当前在中学化学教学活动中定量实验并没有得到广泛开展,因此研究中学化学定量实验有利于推动中学化学实验改革、提高中学化学教师对定量实验的重视程度、发展中学生的定量意识和定量能力。本论文在文献分析的基础上总结了中学生定量意识和定量能力的内涵,在实践研究中选取中学化学社团社员作为实践研究对象,采用问卷调查的方法了解学生的定量意识和定量能力水平,进而在社团活动中开展两个定量实验,通过对实验过程的观察了解学生在实验过程中表现出来的定量意识和定量能力情况,实验结束后采取书面形式访谈和个人访谈相结合了解学生在定量实验后定量意识和定量能力的变化情况。研究发现,中学生的定量意识包括从定量的角度认识化学、认识化学中的量、认识化学实验中定量的价值,定量能力包括定量实验能力和运用数学方法解决物质性质及其变化中量的问题的能力。在中学化学课外活动中开展定量实验,作为教学活动中定量实验开展不足的补充,不仅可以激发学生的科学探究兴趣,培养学生的动手实验能力,最重要的是可以培养学生的定量意识和定量能力。
[Abstract]:Quantitative experiment is an important part of chemical experiment in middle school. Quantitative experiment is of great significance in cultivating students' scientific literacy, especially in cultivating their quantitative consciousness and ability, which can not be replaced by qualitative experiment.However, the quantitative experiment has not been widely carried out in the middle school chemistry teaching activities at present. Therefore, the study of the middle school chemistry quantitative experiment is helpful to promote the reform of the middle school chemistry experiment and to raise the importance of the middle school chemistry teacher to the quantitative experiment.Develop high school students' quantitative consciousness and ability.On the basis of literature analysis, this paper summarizes the connotation of high school students' quantitative awareness and quantitative ability, and selects members of middle school chemical societies as the objects of practical research.Using the method of questionnaire to understand the students' quantitative consciousness and ability level, and then carry out two quantitative experiments in the community activities.Through the observation of the experimental process, we can understand the students' quantitative consciousness and ability in the course of the experiment.At the end of the experiment, a combination of written interview and personal interview was used to understand the changes of students' quantitative consciousness and ability after the quantitative experiment.The study found that the quantitative consciousness of middle school students includes understanding chemistry from a quantitative point of view, recognizing the quantity in chemistry, and recognizing the value of quantification in chemical experiments.The quantitative ability includes the ability of quantitative experiment and the ability to solve the problem of matter property and its changing quantity by mathematical method.To carry out quantitative experiments in the extracurricular activities of chemistry in middle schools, as a supplement to the deficiency of quantitative experiments in teaching activities, can not only stimulate the students' interest in scientific inquiry, but also cultivate the students' ability of hands-on experiments.The most important thing is to cultivate students' quantitative awareness and ability.
【学位授予单位】：南京师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：G633.8

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