手持技术在中学化学实验教学中的案例开发与应用

发布时间：2018-04-20 12:51

本文选题：手持技术 + 实验教学　；参考：《合肥师范学院》2017年硕士论文

【摘要】：随着科技的发展,人们逐渐将手持技术应用于教学中,既便于学生更加直观的认识实验的现象和特征,又有利于培养和提高学生的信息素养能力。为弥补传统实验的短处,充分发挥手持技术在中学化学实验教学中的长处,通过调研文献,本论文对实验教学模式进行探究,开发了四个手持技术实验案例:一是基于手持技术验证硝酸钾溶解度随温度升高而增大;二是基于手持技术测定金属活动性强弱;三是基于手持技术测定强弱电解质的导电率;四是基于手持技术测定影响苯酚和氯化铁反应平衡的因素。结合手持技术的特点,优化实验过程,将实验过程中的变化更加直观、具象、清晰的表现于学生的面前。手持技术具有显著的优点,学生对于手持技术的学习,学习兴趣浓厚,学习动机强,能充分调动学生学习的积极性。对于提高课堂教学效果,功效显著。对于培养学生的观察能力,实践动手能力,效果强于传统实验技术。在课堂实践过程中,将实验内容合理详尽的安排在教学设计中。对教学案例进行分析,优化,再设计。课后分发调查问卷,调查学生对于手持技术进课堂的态度,调查手持技术是否对学生的学习态度产生影响,调查学生学习手持技术的积极性。通过教学活动发现,手持技术实现教学由“定性”转变到“定量”,有利于学生理解化学概念,吸引学生学习注意力,提升学生学习兴趣。提升学生实验技能,锻炼思维品质,培养学生的创新意识,发散学生的思维,促进学生发展性知识的形成。
[Abstract]:With the development of science and technology, people gradually apply handheld technology to teaching, which is not only convenient for students to recognize the phenomena and characteristics of experiment, but also conducive to the cultivation and improvement of students' ability of information literacy. In order to make up for the shortcomings of traditional experiments and give full play to the advantages of handheld technology in chemistry experiment teaching in middle schools, this paper probes into the experimental teaching mode by investigating and researching the literature. Four experimental cases of hand-held technology are developed: first, the solubility of potassium nitrate increases with the increase of temperature based on hand-held technology; second, the activity of metal is measured based on hand-held technology; third, the conductivity of strong and weak electrolytes is measured based on hand-held technology. Fourth, the factors affecting the equilibrium of phenol and ferric chloride reaction were determined by hand-held technique. Combined with the characteristics of handheld technology, the experiment process is optimized, and the changes in the experiment process are more intuitive, concrete and clear to the students. Handheld technology has obvious advantages, students have strong interest in learning handheld technology, strong learning motivation, can fully mobilize the enthusiasm of students to learn. To improve the classroom teaching effect, the effect is remarkable. To cultivate students' observation ability and practical ability, the effect is better than that of traditional experimental technology. In the course of classroom practice, the content of the experiment is arranged in detail in the teaching design. Analyze, optimize and design the teaching case. A questionnaire was distributed after class to investigate students' attitude towards handheld technology in class, to investigate whether handheld technology had an impact on students' learning attitude, and to investigate students' enthusiasm for learning handheld technology. Through teaching activities, it is found that the transformation of handheld technology from "qualitative" to "quantitative" is beneficial to students' understanding of chemical concepts, attracting students' attention and enhancing students' interest in learning. Improve students' experimental skills, train their thinking quality, cultivate students' innovative consciousness, spread students' thinking, and promote the formation of students' developmental knowledge.
【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

【参考文献】