Design and Implementation of Teaching Case Library for Novice Science Teachers based on App Inventor

The lack of practical knowledge is a major problem in the training of pre-service teachers. In order to solve the contradiction between pre-service training and post-service needs, and to promote the effective combination of educational theory and practice in pre-service teacher training, this paper starts with the practical teaching problems of novice science teachers, analyzes the problem configuration, collects solutions, extracts the problem solving models, and constructs the framework and content of the case base. From three aspects of system analysis, system design and system implementation, the teaching case base APP is developed by using the App Inventor to expand the application range and way of the case base. Then, through a questionnaire survey on the application effect of the case bank APP, it is found that the primary school science teaching case base is helpful for teachers to understand the teaching knowledge of primary school science and to solve the teaching problems. It is helpful for teachers to analyze and solve similar teaching problems, improve their teaching problem-solving ability, enhance their teaching practice ability, and help pre-service teachers better adapt to future teaching work.