Rhodiolas are a kind of rare Chinese medicines which usually grow in the alpine region. Their stems and roots are used as medicines for a long history. Among the variety of Rhodiolas the value of Rhodiola Rosea is highest, since it contains a kind of unique ingredients named Rosavins. This review focuses on the medicinal functions of the active ingredients of Rhodiola Rosea and introduces the methods of extracting the corresponding active ingredients containing in Rhodiola Rosea. Furthermore the chemical and biosynthetic methods of Rosavins are described. It also provides some useful references for the further development and utilization of Rhodiola Rosea active ingredients.

A good organic chemistry textbook should be a helpful tool for both teaching and self-study processes. A key factor that the textbook editors should consider is how to make it easier for the students to find out and acquire the essence of relevant knowledge. Combined with years of teaching experience, the authors supplemented some original “learning tips” into the new edition of organic chemistry textbook. We believe that these easily understood tips can help students comprehend difficult knowledge points, clarify confusing concepts, integrate related knowledge, and also can stimulate students’ interests in scientific research. This paper introduces the conception, contents and expected achievements of these tips with some examples.

As a compulsory course for chemistry education, inorganic chemistry plays an important role in laying the theoretical foundation of chemistry for normal university students. On the premise of connecting senior high school chemistry knowledge, developing college inorganic chemistry teaching is helpful to build a complete chemistry knowledge teaching system, arouse the enthusiasm of normal college students, and complete the smooth transition from senior high school to college inorganic chemistry. Based on the authors’ teaching practice, teaching practice guidance and research, using version of senior high school chemistry and university chemistry with the contents of the textbooks published by the People’s Education Press and inorganic chemistry textbooks published by Beijing Normal University Press as the instance, this paper discusses the connection of knowledge points between senior high school chemistry and college inorganic chemistry textbooks. From the perspective of teaching and learning, this paper forms part of the accumulation of experience and teaching suggestions.It also provides reference for the inorganic chemistry course teaching under the background of teacher training professional certification.

Based on our online courses of inorganic chemistry, the blended teaching mode was firstly introduced into the learning of element chemistry with Chaoxing learning platform as the carrier. A new teaching strategy of “MOOC+cases intensive teaching+QQ group assistance” was designed. The low-level knowledge can be acquired by students from MOOC, while the learning of high-level knowledge was conducted by targeted live broadcast, group task, and PBL teaching methods. In addition, as a powerful auxiliary tool, QQ groups were used for online tutoring anytime. The classroom, the mobile terminal, and the management end were connected by Chaoxing learning platform, promoting the online and offline discussion and interaction between teachers and students, ultimately favored the pleasant and high efficient intelligent teaching and learning. The survey shows that the blended-learning mode based on “one platform and three terminals” was accepted by most of students.

The first year of college is an important period for undergraduates to transform their learning environment and learning methods from high school to university, and it is also a critical period for them to establish good moral character. Inorganic chemistry is the first professional basic course for chemical engineering undergraduates in the university. By properly integrating patriotism education, green chemistry concepts, and scientific spirit into theoretical and experimental classes, students can establish a positive view of world, philosophy and values, and cultivate their professional recognition and correct professional ethics so that students can improve their overall quality and innovative thinking while mastering professional knowledge.

Molecular structure and intermolecular forces form a connecting link between macroscopic world and micro world. However, under the guidance of “emerging engineering”, chemistry teaching content should be concise in order to strengthen the application-oriented characteristic of specialty. According to the learning situation of engineering students in recent years, the mistaken and confused part about covalent theory, intermolecular forces and ionic polarization is discussed. The purpose is to make students better switch between the macro world and the micro world in the process of understanding the material world, and learn to predict or explain the properties and changes of matter. At the same time, the cultivation of chemical core quality and moral education quality is carried out.

Based on the implementation of the online teaching of organic chemistry course in our school since the epidemic, the authors firstly analyze the advantages and disadvantages of online teaching in detail by comparing with the traditional teaching. Then, the authors further summarize and share various explorations and efforts made by author’s teams in the reconstruction of teaching content, the reconstruction of teaching links and the reform of assessment methods. Finally, it also points out that the problems such as how to make the online teaching more suitable to the characteristics of the course, better serve the realization of the teaching objectives, are still to be explored and studied during the post-epidemic period.

Infrared spectrum was used in the polymer physics experiment teaching, its applications in polymer identification, molecular conformation, crystallinity and compatibility characterization were described by some examples. The setting of the experiments can help students to understand the principle and method of infrared spectrum analysis, learn to use the method to characterize the structure of polymer at different scales, stimulate their enthusiasm for learning, and develop the ability to use relevant knowledge to solve practical problems.

In this paper, the calibration effect of different standard in the preparation process of sodium thiosulfate solution was compared and studied. Combined with the analysis of reagent dosage, reaction time and significance test, the following results were obtained. Potassium dichromate, potassium iodate and potassium bromate can be used to calibrate sodium thiosulfate solution. When potassium bromate is used as the reference material, the amount of reagent is small, the reaction time is short, the experimental cost is low and the end point is easy to observe. The results show that the two-sided t-test meet the statistical requirements and is more suitable for the calibration of sodium thiosulfate solution.

Because of the lack of consistency and systematicness in the basic organic chemistry experiment, an innovative experiment combining the reactions of nitroreduction and diazotization-coupling was carried out in this paper. Adopting m-nitrobenzaldehyde as raw material, the azo dye of 3-[(2-hydroxy-1-naphthalene)azo]benzaldehyde was synthesized by reduction, diazotization and coupling reaction without purification of intermediates. In the innovative experiment, two isolated experiments were combined systematically, which could make the students realize the internal relationship between basic chemical experiments. In addition, the innovative experiment could also be further extended to comprehensive experiment, which was more conducive for students to have systematic understanding and mastering the experiment technology, and to exercise their initiative exploration spirit and comprehensive practice ability.

The operational skills in general chemistry laboratory experiments have more contents and stronger foundation, also most difficulty in teaching. In order to improve the teaching effect and promote the construction and development of general chemistry laboratory experiments teaching resources, a series of micro-videos about the operational skills are designed. The production process of micro-video is introduced in details. A teaching method based on micro-video can effectively compensate for the disadvantages of traditional experimental teaching, enhance the accuracy of teaching, inspire the students’ initiative, improve the teaching effect and promote the reform of teaching mode. Results may provide a reference to the reformation of chemistry experimental teaching. The micro-videos can be applied in other universities due to short content, high definition and extensive applicability.

This paper reports on a Raman spectroscopy detection system that can be built by students themselves, and the corresponding experimental content is also designed. The cutting-edge surface enhanced Raman spectroscopy (SERS) technology is introduced for the detection of melamine, an illegal additive in milk. By assembling and operating the instruments, students could have a deeper understanding of the structure and working principle of scientific instruments, which helps to improve students’ practical ability and innovative thinking.

In the national standard, the cold solvent indicator titration method is adopted to determine the acid value of edible oils, which has the advantages of the simple laboratory instruments, easily got reagents and convenient operation. Introducing national standard method into the zetetic experiment teaching content can stimulate students’ interests and improve the ability of autonomous learning, problem solving skills. However, the method was not suitable for direct application so we carried on the corresponding improvement, including using constant burette instead of micro burette, reducing the concentration of titrant, adopting cyclohexane as solvent to improve security, enhancing stability of titration terminal point by adding deionized water near the end of titration. In teaching practice, we adopted the student-centered teaching method and problem-oriented teaching mode to cultivate students’ ability of knowledge integration and application. This was conducive to cultivate high qualities and innovative talents.

The textbook reconstructs the learning content guided by drug testing activities and centered on drug testing skills. The flexible disassembly and assembly reorganization of the loose-leaf of textbook realizes the loose-leaf application of the textbook, and the unification of teaching content and post standards realizes the work-page implementation of tasks,combining traditional paper textbooks with digital resources to realize three-dimensional resources. At the same time, the education by virtue, curriculum thinking and politics organically integrated into the textbook, reflects the emphasis on technology, art and worship morality, to achieve the purpose of paper and number integration, production and teaching integration, theory and practice integration, morality and technology integration, and shows the new paradigm of vocational education textbook development.

The teaching of basic skills of pharmacy by problem-based learning (PBL) method was explored preliminarily base on the objective condition and teaching characteristics of colleges in west minority nationality areas. As a result, the operating level of basic skills and the ability to discover, analyze and solve problems of experiment group (PBL method) were higher significantly than the control group (traditional teaching method). The PBL method is significant for pharmacy undergraduates in west minority nationality areas to improve innovative ability, and provides a useful reference for cultivating innovation ability of pharmacy undergraduates in other areas.

Principles of chemical engineering is a professional basic course for chemical engineering and related majors. There are a lot of content, calculations and difficulties in classroom interaction. Rain Classroom intelligent teaching tools could help to solve the common problems in teaching. Inhere the application of Rain Classroom intelligent teaching tools in the teaching of principles of chemical engineering includes the aspects of pre-class teaching design, interactions and quizzes in-class, review and information feedback after-class, and course evaluation mechanism, so as to achieve student-centered and scientific evaluation of students’ learning process and effect. The intelligent teaching mode based on Rain Classroom has a significant role in the promotion of teaching. Attendance is significantly improved, and the classroom atmosphere is active. The timely information feedback helps teachers grasp the learning situation of each student, which leads to more personalized teaching.

Virtual reality (VR) technology has significant advantages in education and teaching, on account of its strong immersive and interactive features. In this paper, based on molecular modeling tools and VR simulation, we designed a VR courseware for teaching of molecular docking, which is one of the most important computer-aided drug design technique. Voice explanation, animation demonstration, molecular visualization, interactive operation and other content were integrated in the software. Theoretical knowledge learning and VR experimental operations on molecular docking can be fulfilled in the virtual classroom. The professional terms of molecular docking are explained in simple ways to assist teaching.

This study investigated chemistry majors in a “Double First-Class” university on their needs in international academic journal paper writing through questionnaires and interviews. It was found that students’ needs were higher for co-operative teaching, involving teamwork between English writing teachers and chemistry teachers, aided by editors and librarians to improve their academic literacy, and timely feedback on writing. It is noteworthy that students have the highest demand for personalized, one-on-one tutoring. This study is a valuable reference for designing and implementing such a course in universities, especially in “Double First-Class” universities.

A course evaluation system involving formative assessment was constructed for College Chemistry course. The various learning activities which occurred before, in and after class in a whole semester were designed. The assessments and feedbacks provided the valuable guidance for students to improve their learning by employing self-regulating strategy. The evidences gathered via anonymous questionnaire show that the introducing of formative assessment in course evaluation system significantly promoted student engagement in learning and obviously fostered their autonomous learning.

Electrode potential is an important physical quantity in redox reaction, and the understanding and calculation of its concept is the key and difficult point in teaching. Based on inorganic chemistry exercises, this paper combines electrode potential with four balances, and develops students’ thinking through multiple solutions of one problem, aiming to help students consolidate their knowledge, use it flexibly, draw inferences from one instance, and improve their learning efficiency and scientific thinking ability, deepen the understanding and grasp of the basic principles of chemistry.