Abstract: Concept is the basis component and also the result of the thinking process. According to the way how they are mastered concepts can be divided into two kinds : the pre-scientific concept and the scientific concept.One of the most important tasks in teaching is to make the pupils master the scientific concept quickly and correctly. In this article, the author sums up the teaching experiences gained from several courses in primary and middle schools, analyzes them from the psychological point of view, and finally puts forward the following points to be considered by the teacher: 1) providing abundant sensory material by using images of the past and perceptions made at class ; 2) selecting adequate and using correct sensory material. The elected material should be of different types and Should be used in a great variety of ways ; 3) enlightening the active thinking of the pupils, paying attention to the interconnection of previously and newly acquired knowledge, using the method of contrast and eventually fixing the meaning to a certain definition ; and 4) using the concept in practice, in which it can be consolidated and developed.

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