{"title":"Innovative Teaching Methods of Massive Open Online Courses under New Coronavirus Pneumonia: Finding Chemistry in Detective Conan as an Example","authors":"Hongjian Zhang, Wen Liang, Hongmei Lu, Yunfeng Wu, Pei Tian, Yuecai Song, Hai Xu","doi":"10.3866/pku.dxhx202004121","DOIUrl":"https://doi.org/10.3866/pku.dxhx202004121","url":null,"abstract":"","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70222719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx202004122
Weiguang Zhao, Ying Guan
{"title":"Online Teaching of Organic Chemistry Laboratory for Improvement of Research Ability (I): Research Interest, Home Lab and Thinking Like a Chemist","authors":"Weiguang Zhao, Ying Guan","doi":"10.3866/pku.dxhx202004122","DOIUrl":"https://doi.org/10.3866/pku.dxhx202004122","url":null,"abstract":"","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70222820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx201904032
P. Geng, Fan Zhang
: Analytical chemistry laboratory is an important part of chemistry laboratory and analytical chemistry learning. In order to improve the teaching quality, practical ability, problem-solving ability and innovative ability of students, the flipped classroom teaching mode based on micro-course has been applied in the analytical chemistry laboratory. It is proved that this teaching mode aroused the learning passion, improved the comprehensive experimental skills, consolidated the theoretical knowledge, and cultivated scientific research thinking, thus, really achieved the goal of creative talents.
{"title":"Exploration of Flipped Classroom Teaching Mode Based on Micro-Course in Analytical Chemistry Laboratory Teaching","authors":"P. Geng, Fan Zhang","doi":"10.3866/pku.dxhx201904032","DOIUrl":"https://doi.org/10.3866/pku.dxhx201904032","url":null,"abstract":": Analytical chemistry laboratory is an important part of chemistry laboratory and analytical chemistry learning. In order to improve the teaching quality, practical ability, problem-solving ability and innovative ability of students, the flipped classroom teaching mode based on micro-course has been applied in the analytical chemistry laboratory. It is proved that this teaching mode aroused the learning passion, improved the comprehensive experimental skills, consolidated the theoretical knowledge, and cultivated scientific research thinking, thus, really achieved the goal of creative talents.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70215075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A comprehensive exploratory experiment, preparation of calcium alginate microcapsules and nano-Fe3O4 is introduced to explore the effect of adsorbing organic matter and metal ions in water. This experiment is in line with the cutting-edge science development, which can fully stimulate students’ interest in learning, and change passive learning into active learning. It is very conducive to improving students’ comprehensive inquiry ability.
{"title":"Controllable Preparation and Applications of Alginate Microcapsules and Nano-Fe3O4: Introduce a Comprehensive Exploratory Experiment","authors":"Hongyu Liu, 合肥 sup 化学国家级实验教学示范中心, Chenlong Zhang, Weitao Jiang, Liyan Liu, Weilong Xing, Gu Jin, Q. Yao, Jiao Li, Xiaokui Wang, Lingling Li, 合肥 sup 中国科学技术大学化学与材料科学学院","doi":"10.3866/pku.dxhx201905052","DOIUrl":"https://doi.org/10.3866/pku.dxhx201905052","url":null,"abstract":"A comprehensive exploratory experiment, preparation of calcium alginate microcapsules and nano-Fe3O4 is introduced to explore the effect of adsorbing organic matter and metal ions in water. This experiment is in line with the cutting-edge science development, which can fully stimulate students’ interest in learning, and change passive learning into active learning. It is very conducive to improving students’ comprehensive inquiry ability.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70216716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx201906053
Hong Zhong
The compulsory basic course “analytical chemistry” that is designed for the interdisciplinary training program in chemical biology has been used as an example for the proof-of-principle demonstration of in-depth teaching and learning. In this work, several important issues will be discussed in-detail, including the construction of relational knowledge structures and multi-dimensional curricular settings, in-depth learning environment with rich contents, academic engagement and progressive logic inference, combination of heuristic and flipped classroom model, analysis and research of course books, extracurricular activities, evaluation of learning processes and organization of various resources. Through the exploration of effective ways for in-depth learning and teaching of “analytical chemistry”, not only higher order of thinking skills and cognitive engagement but also the nature of subjects as well as thoughts and methods are expected to be achieved by students in the processes of motivated learning. It is aimed to boost the transformation of personal knowledge to professional accomplishments and core capabilities.
{"title":"From Knowledge to Intelligence: In-Depth Teaching and Learning―The Design and Practice of \"Analytical Chemistry\" for Interdisciplinary Program in Chemical Biology","authors":"Hong Zhong","doi":"10.3866/pku.dxhx201906053","DOIUrl":"https://doi.org/10.3866/pku.dxhx201906053","url":null,"abstract":"The compulsory basic course “analytical chemistry” that is designed for the interdisciplinary training program in chemical biology has been used as an example for the proof-of-principle demonstration of in-depth teaching and learning. In this work, several important issues will be discussed in-detail, including the construction of relational knowledge structures and multi-dimensional curricular settings, in-depth learning environment with rich contents, academic engagement and progressive logic inference, combination of heuristic and flipped classroom model, analysis and research of course books, extracurricular activities, evaluation of learning processes and organization of various resources. Through the exploration of effective ways for in-depth learning and teaching of “analytical chemistry”, not only higher order of thinking skills and cognitive engagement but also the nature of subjects as well as thoughts and methods are expected to be achieved by students in the processes of motivated learning. It is aimed to boost the transformation of personal knowledge to professional accomplishments and core capabilities.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70218858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx201907001
Nü Wang, Yong Zhao, Zhaoyue Liu, Dongliang Tian
Aiming at the problem of the disconnection between theoretical teaching and laboratory course in physical chemistry, we propose teaching mode between theoretical teaching and laboratory course based on the author’s teaching reform and exploration. It has been proved that combination of theoretical and laboratory teaching could stimulate students’ subjective initiative in learning, and deepen the understanding of knowledge points. It will significantly improve students’ ability to analyze problems, solve problems and innovate ability.
{"title":"Discussion on Teaching Modes of Physical Chemistry between Theoretical Teaching and Laboratory Course","authors":"Nü Wang, Yong Zhao, Zhaoyue Liu, Dongliang Tian","doi":"10.3866/pku.dxhx201907001","DOIUrl":"https://doi.org/10.3866/pku.dxhx201907001","url":null,"abstract":"Aiming at the problem of the disconnection between theoretical teaching and laboratory course in physical chemistry, we propose teaching mode between theoretical teaching and laboratory course based on the author’s teaching reform and exploration. It has been proved that combination of theoretical and laboratory teaching could stimulate students’ subjective initiative in learning, and deepen the understanding of knowledge points. It will significantly improve students’ ability to analyze problems, solve problems and innovate ability.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70219070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx201911006
D. Xin, Tianze Wang, Chen Duwen, Jingcheng Yu, Guang-yan Sha
In order to bring the concept of green chemistry into basic laboratory teaching and to enhance the exercise on redox reactions, we designed an experiment about the mutual conversion between benzoin and benzaldehyde. In this experiment, benzaldehyde is catalyzed by Vitamin B1 to be converted to benzoin, then benzoin is reduced with sodium borohydride into 1,2-diphenyl glycol. Afterwards, the product will be oxidated into benzaldehyde under the catalyzing of new green catalyst NaMnOx. 1H NMR was used to authenticate the product in each step of the experiment, and the yield of the oxidation reaction is greater than 90% with HLPC measurement. By completing this cyclic conversion reaction, we conveys the idea of green chemistry to the students, and the students get practice on operating the redox reaction. At the same time, students’ cognition and evaluation of chemical reaction can be more complete.
{"title":"Mutual Conversion between Benzaldehyde and Benzoin Based on the Idea of Green Chemistry","authors":"D. Xin, Tianze Wang, Chen Duwen, Jingcheng Yu, Guang-yan Sha","doi":"10.3866/pku.dxhx201911006","DOIUrl":"https://doi.org/10.3866/pku.dxhx201911006","url":null,"abstract":"In order to bring the concept of green chemistry into basic laboratory teaching and to enhance the exercise on redox reactions, we designed an experiment about the mutual conversion between benzoin and benzaldehyde. In this experiment, benzaldehyde is catalyzed by Vitamin B1 to be converted to benzoin, then benzoin is reduced with sodium borohydride into 1,2-diphenyl glycol. Afterwards, the product will be oxidated into benzaldehyde under the catalyzing of new green catalyst NaMnOx. 1H NMR was used to authenticate the product in each step of the experiment, and the yield of the oxidation reaction is greater than 90% with HLPC measurement. By completing this cyclic conversion reaction, we conveys the idea of green chemistry to the students, and the students get practice on operating the redox reaction. At the same time, students’ cognition and evaluation of chemical reaction can be more complete.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70220155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx201911054
Li Jialiang, Wang Boyu, Fu Xinyu, Song Zhiguang, Zhu Wanchun, Fan Yong, Ma Qiang, Guo Yu-peng
: In the study, we introduced a new organic fluorescence molecule into organic laboratory teaching. A novel course content about fluorescent dimethylaminosylstyrylbenzoxazole was designed. The clear proton response properties of the product can be observed directly. The experiment has many advantages, including new reaction mechanisms, low laboratory risk, simple in operation, observable process changes, and good environmental friendliness. Furthermore, this laboratory course can be divided into a series of unites, which is suitable for different lab teaching time requirements. According to the experiment. We have received good teaching effects. This experiment not only cultivates student’s basic operation and comprehensive ability, but also stimulates students’ research interest.
{"title":"Design and Exploration of a Novel Organic Proton Response Fluorescence Molecule in Laboratory Teaching","authors":"Li Jialiang, Wang Boyu, Fu Xinyu, Song Zhiguang, Zhu Wanchun, Fan Yong, Ma Qiang, Guo Yu-peng","doi":"10.3866/pku.dxhx201911054","DOIUrl":"https://doi.org/10.3866/pku.dxhx201911054","url":null,"abstract":": In the study, we introduced a new organic fluorescence molecule into organic laboratory teaching. A novel course content about fluorescent dimethylaminosylstyrylbenzoxazole was designed. The clear proton response properties of the product can be observed directly. The experiment has many advantages, including new reaction mechanisms, low laboratory risk, simple in operation, observable process changes, and good environmental friendliness. Furthermore, this laboratory course can be divided into a series of unites, which is suitable for different lab teaching time requirements. According to the experiment. We have received good teaching effects. This experiment not only cultivates student’s basic operation and comprehensive ability, but also stimulates students’ research interest.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70220530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx202002001
Yifan Zeng, Xiao-feng Qin, Yue Wang, Z. Li
The chemical reaction rate is the basic concept of reaction kinetics, and chemical kinetic experiments to determine rate laws are common in college chemistry laboratory courses. However, there are many shortcomings in this experiment, with the large consumption of reagents as one of them. Starting from the concept of green chemistry, we propose to combine the color theory with chemical knowledge, so as to save the reagents used in the experiment and improve the students’ interest in the experiment. In this paper, we first conducted a survey to investigate the subjective evaluation on classical kinetics experiments and the willingness to do virtual chemical experiments with smart phones. After analyzing the feasibility of the method in theory, we shot a short video of the reaction of methyl violet with sodium hydroxide, and determination of the kinetic constant using colorimetric analysis. The method combines the complementary color theory and Lamber-Beer law, and a dynamic experiment can be carried out by using smart phone and commonly used software only.
{"title":"Determination of Kinetic Constant of Methyl Violet with Sodium Hydroxide Using Smart Phone","authors":"Yifan Zeng, Xiao-feng Qin, Yue Wang, Z. Li","doi":"10.3866/pku.dxhx202002001","DOIUrl":"https://doi.org/10.3866/pku.dxhx202002001","url":null,"abstract":"The chemical reaction rate is the basic concept of reaction kinetics, and chemical kinetic experiments to determine rate laws are common in college chemistry laboratory courses. However, there are many shortcomings in this experiment, with the large consumption of reagents as one of them. Starting from the concept of green chemistry, we propose to combine the color theory with chemical knowledge, so as to save the reagents used in the experiment and improve the students’ interest in the experiment. In this paper, we first conducted a survey to investigate the subjective evaluation on classical kinetics experiments and the willingness to do virtual chemical experiments with smart phones. After analyzing the feasibility of the method in theory, we shot a short video of the reaction of methyl violet with sodium hydroxide, and determination of the kinetic constant using colorimetric analysis. The method combines the complementary color theory and Lamber-Beer law, and a dynamic experiment can be carried out by using smart phone and commonly used software only.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70220965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx202003007
Xincai Liu, Binbin Dong, D. Chao
In this paper, we introduced a comprehensive chemical experiment in research-oriented university, the polyaniline film for supercapacitor featuring energy level visualization. The content included electrochemical polymerization of aniline, study of electrochromic properties, fabrication and properties of supercapacitor device, and its charge storage visualization. Through the practice, students will be able to further enhance the practical ability of scientific research on the basis of mastering experimental theory and experimental skills. The development of this experiment can also expose students to the frontiers of scientific research and cultivate students’ ability to think independently and innovate continuously.
{"title":"Polyaniline Film for Supercapacitor Featuring Energy Level Visualization: A Proposed Comprehensive Chemical Experiment","authors":"Xincai Liu, Binbin Dong, D. Chao","doi":"10.3866/pku.dxhx202003007","DOIUrl":"https://doi.org/10.3866/pku.dxhx202003007","url":null,"abstract":"In this paper, we introduced a comprehensive chemical experiment in research-oriented university, the polyaniline film for supercapacitor featuring energy level visualization. The content included electrochemical polymerization of aniline, study of electrochromic properties, fabrication and properties of supercapacitor device, and its charge storage visualization. Through the practice, students will be able to further enhance the practical ability of scientific research on the basis of mastering experimental theory and experimental skills. The development of this experiment can also expose students to the frontiers of scientific research and cultivate students’ ability to think independently and innovate continuously.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70221881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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