Affected by the epidemic, some students are still abroad this semester. In order to create a high-quality offline and online classroom for international students, improve teachers' English teaching level, and exchange teaching experience, on May 17, 2022, the school of chemistry and chemical engineering held an offline+online open course of "Basic Chemistry" online, which was teached by Prof. Xue Zhaoli. The course is offered to medical students from the class of 2021 . The leaders of the Institute of chemical engineering and some teachers attended the online open course.

In 2021, “Basic Chemistry” was rated as the first –class taught in English for undergraduate. During the lecture, Prof. Xue introduced some advanced scientific research results into the classroom, so that students could get involved in the cognition and learning of scientific research in advance, which stimulated students' interest. This course adopts offline + online Dingding classroom live broadcast and sharing ppt. The main teaching features of this course are: using offline + online teaching and learning, random roll call and answer questions during class, and detailed explanation of electronic blackboard with pictures and texts. In the whole teaching process, the interaction between teachers and students is outstanding, the online software is skillful, the explanation language is vivid, the key points are clear, and the difficulty analysis is thorough. The classroom atmosphere is active and the effect is good.

This open class provides a valuable opportunity for teachers of international students to learn from each other. At the same time, all teachers, especially young teachers, have benefited a lot and achieved good expected results. (School of chemistry and Chemical Engineering)