Abstract When doing chemical experiments, we should strictly follow the corresponding operation steps and remember the experimental precautions, otherwise it will cause serious experimental consequences. However, in the virtual simulation laboratory, students can repeatedly “trial and error” and feel the consequences of wrong operations in a virtual environment that is almost real. Based on this, take the experiments of the first and second units of the grade nine chemistry textbook of People's Education Edition as an example to sort out the experimental considerations and trial and error results. Then taking the measurement experiment of oxygen volume fraction in the air, the use experiment of alcohol lamp, and the heating potassium permanganate as examples, this paper analyzes the application of “trial and error” teaching, and it is found that “trial and error” teaching in the virtual simulation laboratory can not only establish students' safety awareness, but also enhance students' sense of innovation, cultivate the spirit of scientific inquiry, and deepen the memory of knowledge.
TIAN Ju-Xiang, MA Zhan-Ling. Application of Junior High School Chemical Experiment “Trial and Error” in Virtual Simulation Laboratory[J]. Chinese Journal of Chemical Education, 2022, 43(1): 105-109.
