During the battle against COVID-19 epidemic, the inorganic chemistry teaching team of Jilin University carried out online teaching of student-centered "inorganic chemistry Ⅱ" course based on "inorganic element chemistry" MOOC with Chaoxing learning platform and QQ group as the auxiliaries. Through the big data support and interactive communication section of Chaoxing learning platform, the learning situation of students in the three learning links of "pre-class, in-class, after-class" was timely tracked and analyzed. Practice showed that online teaching could accomplish teaching and learning effectively.

During the outbreak of COVID-19, the teaching team of chemical engineering principles experiment of Nanjing University uses Tencent Meeting and Pedagogy Square as online platforms, applies the unit operation experiment MOOC particularly designed by our course team, and introduces the simulation software of Oubeier Cloud Classroom and Es-online. The online classroom delivers equivalent teaching as the offline classroom.

Finding Chemistry in Detective Conan is a Massive Open Online Course (MOOC) offered by Central South University. Under new coronavirus pneumonia, the curriculum team launched a series of student-centered innovative teaching methods based on the existing MOOC Video teaching resources and curriculum features. At the same time, the advantages of various network information platforms such as MOOC, QQ group and Sojump.com were also introduced to create a wonderful Internet plus classroom, which enhanced students' sense of "learning" and strengthened the teaching of teachers' guiding, promoting students' active learning.

The online teaching of chemistry and society course has been successfully carried out by using national high-quality online open course as the course resource and Superstar Learning Platform for online teaching. The practice shows that online teaching based on the combination of China University MOOC, and Superstar Learning Platform has been well received by students, who are generally easy to accept and highly motivated to participate. This practice shows good teaching effect.

Remote teaching and learning have been adopted during the COVID-19 outbreak. In this particular period of time, a totally-online-teaching strategy was implemented by the teaching team of physical chemistry in Tianjin University. With the enrichment of learning resources, the optimization of the inspectors' teaching skills, as well as the elaborated managements of the whole learning process, the course has been given online successfully, though it is thought unsuitable for online teaching due to the abstruse theory and complex mathematical treatments involved in teaching. Both the central position of student and the leading role of teacher are greatly promoted in the newly developed totally-online-teaching process. The experiences obtained in this teaching process will lay great impact on teaching mode innovation in the future.

Due to the outbreak of the COVID-19 epidemic, the new semester has been postponed. But in order to continue teaching and student training work, teachers from colleges are efficiently utilizing internet education resources, and actively carry out online teaching. This paper uses one of the virtual simulation experiment projects at Shandong University, as an example. It introduces how to conduct online laboratory training and teaching in inorganic and analytical chemistry laboratory by utilizing the combination of virtual simulation experiment projects and online resources, and help student learn the theory and operation of iodometry titration.

Owing to the outbreak of novel coronavirus pneumonia, the opening of spring semester is postponed, but teaching is not suspended, which requires teachers to utilize the network platform for online teaching smoothly. How to ensure the quality of teaching and learning has become a big challenge. In this paper, taking Chaoxing Fanya platform as an example, the construction of an online open course of organic chemistry for students of biology major is introduced.

The spring semester of 2020 is affected by the new coronary pneumonia epidemic, which prevents the normal classroom teaching of universities in China. Nankai University actively responds to the request of "Suspended classes but not stop teaching and learning" proposed by the Ministry of Education. The online teaching software such as "Rain Classroom" and "Tencent Meeting" are used to provide online teaching to undergraduate students. This article takes organic chemistry teaching as an example and introduces the implementation process and effectiveness of online teaching. According to the particularity of online teaching, teachers must change the teaching mode to ensure the teaching work carried out effectively.

Online teaching is an important measure to carry out the "no suspension of classes" during novel coronavirus pneumonia, how to make online teaching more effective is currently the major problem. In this paper, selecting Tencent Meeting and Ketangpai as the teaching platforms, complementary with the respective advantages of the other process evaluation platforms, a new form of online teaching of organic chemistry courses was built by three approaches including reorganizing teaching resources, innovating teaching activities and reforming teaching evaluation. It provides reference for the effective implementation of online teaching.

Due to COVID-19, all the universities in China has postponed their spring semester. The Ministry of Education issued a call "suspending classes without stopping learning" to require universities to carry out online teaching actively. Up to now, Online teaching has been implemented for nearly eight weeks, and teachers are familiar with online teaching methods. Then, how to hold online courses efficiently and refine course resources have become the main tasks for teachers. This paper elaborates on the practice and skills of rapid improvement of online course and interactive teaching based on "Chaoxing fanya platform and Xuexitong". Using these skills can not only reduce the workload of teachers, but also build high-quality online courses to ensure teaching quality and objectives. This paper could provide a reference for college teachers to implement online teaching efficiently.

2020 spring semester has been postponed due to the novel coronavirus outbreak in China. The teaching group of Basic Chemistry 2 in Beihang University has offered a practical proposal for online course. This proposal takes all measures to make sure the successful teaching activity, including MOOC, effective communication among teachers and students, great teaching group work, database of teaching materials and mixed teaching strategy.

In the online organic chemistry and laboratory courses, the open or semi open quizzes before class and after class are adopted to explore the "dual quizzes teaching" mode on the network teaching platform. As the progress of "dual quizzes teaching", students' learning weakness, confidence and enthusiasm are improved continuously. Through the analysis of online students' learning data, questionnaire and interactive feedback, the teachers can evaluate the learning situation of the students and regulate instructional content in time. As a result of teaching online, the "dual quizzes teaching" mode has achieved highly positive effect.

Online laboratory teaching with multiple dimensions was implemented based on the virtual simulation laboratory teaching project, combined with Blackborad (Bb) teaching platform and online communication media such as Tencent classroom/Tencent conference, so that students can have a three-dimensional "online laboratory class". It not only solved the laboratory teaching problem during the prevention and control period of the new coronavirus, but also expanded the form and improved the quality of laboratory teaching.

During the outbreak of novel coronavirus pneumonia, teaching reformation in the principles of chemical engineering online course was carried out. The teaching means was secondary researched and developed. The chemical professional software was used in online teaching. And the combination of life instance and chemical process principle improved the teaching effect. Through the reform attempt, students' interest in the course and their understanding of abstract chemical process is improved. The students' theory is enriched, which lays a foundation for the future development of mixed online and offline teaching.

The COVID-19 broke out on a large scale, and online teaching became the first choice for teachers. Avoiding network congestion and ensuring learning effects are the dilemmas faced by online teaching. With the help of the UOOC platform and the Tencent Classroom, taking the "Polymer Structure and Performance" course as a sample, we suggested a new "online asynchronous teaching" model. Among them, the SPOC course is convenient for students to manage their learning time; "Chapter Quiz" and "Student-to-Student Mutual Evaluation" are helpful for students to obtain multi-angle feedback; project tasks are focused on case analysis so that students carry out inquiry-based learning. Overall, the "online asynchronous teaching" model breaks the time and space restrictions on teaching and learning, guarantees the quality of teaching during the epidemic, and lays the foundation for creating a "golden class".

In order to combat the impact of the new coronavirus-infected pneumonia epidemic (COVID-19) on normal school opening and classroom teaching, our analytical chemistry department actively responded to the initiative, quickly prepared and built an online MOOC teaching activity using the school multi-level information-based learning platform, to ensure the teaching arrangement during the deferred semester, and help and guide students to complete this course with high quality and efficiency. This article analyzed from the four aspects, including fast construction of analytic chemistry courses and their characteristics, learning and management with the school curriculum platform, auxiliary teaching with WeChat group, QQ group or public mailbox, and students' using effects and learning requirements. We hope to provide a data support for new teaching methods exploration, in order to improve the teaching quality of analytical chemistry, so as to complete the teaching and learning with students, and obtain ideal results.

The outbreak of the COVID-19, the number of confirmed cases continues to rise, and colleges are postponed, but classes are not suspended or suspended, which requires teachers to learn to utilize existing network resources and actively carry out online teaching. Rain class is loved by front-line teachers because of its simple interface and easy operation. This article takes rain class as an example. Through simple five steps, it helps zero-based teachers to realize online teaching, and offer a simple and effective solution for the majority of front-line teachers.

At the beginning of the New Year in 2020, Corona Virus Disease 2019 (COVID-19) suddenly swept across the country. In order to prevent the infection caused by crowd, "Suspended classes but not stop teaching and learning" was proposed by the Ministry of Education. Students in local colleges and universities show obvious variations in self-discipline, consciousness and initiative. Such a practical situation brings us a great challenge to effectively carry out the online teaching for chemistry major. Taking the online teaching of "Materials Chemistry" as an example, this paper introduces the process of online teaching of chemistry major in the local universities. In view of the problems encountered in the teaching process and the solutions adopted, this paper summarizes the issues needing attention during the online teaching. It is hoped that this paper can provide some useful reference for the online teaching of chemistry major in local colleges and universities.

Due to the epidemic situation of the novel coronavirus pneumonia, the opening of classes for colleges and universities has been postponed. We need to launch online teaching in order to achieve the goal of "non-stop teaching, non-stop learning". Based on the superstar learning platform, the teaching practice of the recording and broadcasting for organic chemistry course has been carried out, to provide some reference for teachers in colleges and universities.

During the wide spread of new coronavirus pneumonia, how to use information technology for carrying out the effective online teaching is an important question and discussion among teachers and students. Instrumental Analysis is an important basic course for the college students majoring in chemistry. In the time when teachers and students can only "hear" or "meet" online, how do we ensure the quality of online teaching? Taking the introduction part as an example, the author presents the process and fruits of their efforts to achieve better teaching and learning quality.

In the wake of the intensifying novel coronavirus epidemic nationwide, a number of universities and colleges have postponed the start of the spring semester. However, education continues via online platforms during disease outbreak, which also offers an opportunity to explore the new teaching model. This paper reviewed how to set up "double-teacher online class" to carry out targeted teaching tutorials via DingTalk software.

Taking the online teaching of "inorganic chemistry" course at Dezhou University as an example, the "six steps before class, six steps in class, six steps after class" online course teaching model based on "Rain Class + Dingding Live" and an online "short class" were constructed. The main content and implementation methods of teaching design, teaching process, teaching effect, teaching reflection, teaching evaluation in online course teaching were discussed. It has been proved in practice that this model can effectively improve students' learning interest and enhance teaching effects.

In order to prevent the spread of new coronavirus (COVID-19) outbreak and respond to the Ministry of Education's call for "postponement of school without suspension of learning", we firstly analyzed the two students' problems and three teacher's misunderstandings in online teaching, and then compared the advantages and disadvantages of different live broadcast platforms. Some suggestions for online teaching were subsequently proposed. Online teaching guidance based on "Chaoxing live broadcast + Xuexitong" was offered as an example for online teaching.

It has been two months since a boom of online education triggered by the epidemic in China. At present, we are keeping focus on how to optimize our online class. In the case of chemistry laboratory courses, there's not much that can be done to experimental operations through online teaching. While for the traditional teaching procedure, there is still room for improvement in terms of integrating research to teaching, interactivity, etc. This paper will present some design strategies for improving teaching the organic chemistry laboratory online. To be specific, it describes how teaching materials like the lesson plan and virtual lab were coordinated into the online teaching. And we will also discuss the holistic approach to a better outcome for students' active learning and integration research into teaching by redesigning multiple phases, such as the pre-laboratory preparation, live online class, experimental operations.

The analytical chemistry course team of China University of Geosciences (Wuhan) successfully carried out the online teaching of analytical chemistry course by using national high-quality online open course as the course resource, MOOC classroom as the smart teaching tool, and QQ group as the platform for online teaching and tutoring. The practice shows that online teaching based on the combination of China University MOOC, MOOC classroom and QQ group has been well received and favored by students, who are generally easy to accept and highly motivated to participate. This practice shows good teaching effect at the beginning.

Aiming at the requirement of "suspending classes without stopping learning" in the epidemic situation of new coronary pneumonia, a variety of information technologies were used to construct a cloud classroom of inorganic chemistry. How to use Tencent classroom, Superstar learning and WeChat public account to construct this "inorganic chemistry" cloud class was introduced. The teaching effect of Inorganic Chemistry was discussed.

An outbreak of COVID-19 hits China at the end of 2019. In analytical chemistry teaching, we try to combine the hot issue with the main points of frontier research areas, for example, nucleic acid detection of new coronavirus, and inspire the students to think deeply and understand the basic requirements of analytical chemistry. Taking advantage of online teaching resources, the authors make some attempts in the teaching process.

Because of the outbreak of COVID-19, the course 'Analytical Chemistry II' is taught via online for the 2019-2020 spring semester. During the process, materials from various sources are successfully incorporated into the teaching. Particularly, the detection, therapy, drug development for COVID-19 are all tightly related to analytical chemistry. With introduction of these correlative multimedia materials into the teaching and learning practice, we can help the students better understand the concept of analytical chemistry. It is a beneficial attempt for combination of online and offline teaching in the future.

In response to the 2019-novel coronavirus pneumonia epidemic, teachers are actively exploring effective online teaching methods through online live broadcast and online interactive discussions, so as to provide a good learning experience for students who are studying at home. This paper takes the course of "inorganic chemistry and chemical analysis" as an example, facing the particularity during the epidemic, the former "online-merge-offline" hybrid teaching mode is adjusted accordingly to "full online" remote hybrid teaching mode, so as to realize real-time and high-efficiency teaching effect in different places.

Under the case of novel coronavirus (COVID 19), and in response to the Ministry of Education's call for "postponement of school without suspension of learning", online teaching should be equivalent to the real class teaching. Based on Chinese University MOOC platform, this paper establishes SPOC on campus with the open online course Organic Chemistry as the online learning resource. Before class, students learn online video and self-testing. The teacher will answer questions and interact with students through live broadcasting. The student will practice and consolidate after school. "One-stop" solves the learning needs of the three stages of online flipped classroom and demonstrates online flipped classroom teaching effect.