Abstract: For the purpose of practicing thoroughly the policies of the Chinese Communist Party on education, i. e. to serve the political affairs of working class and to be connected with productive labour, the authors investigated the relationship between the practice in industrial productive work and the acquistion of theoretical knowledge of physics in middle school students.In the study, the authors observed some facts such as: under the circumstance that students did productive work, their interest, understanding and memory of theoretical knowledge (of physics) were facilitated. Thus, students well assimilated theoretical knowledge. This, in turn, helped students understand the process of labor work thereby promoting the efficiency of work. Under such circumstances, students' knowledge was broadened and deepened in contents.Finally, a preliminary attempt was made to analyze psychologically the above facts. The authors considered that the changes in students' attitude toward learning and the raising of efficiency in learning resulting from their practice in productive work is itself a reflexion of labor processes, and that such laws of reflexion could be applied in increasing the efficiency of teaching.

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