摩擦力에 대한 中學生들의 誤槪念 指導 方案 = An Instruction Strategy for Middle School Students'Misconceptions on Frictions

다국어 초록 (Multilingual Abstract)

In this study, middle school students' misconceptions about frictions acting on objects were examined. 66 students of the first school year and 79 students of the second and the third school year in chonju city were selected. Test forms were newly developed for this study. The students' responding styles were classified and the frequencies of the respoase were analyzed.
The results of this study are following: The students thought that given force was smaller than the force of friction in the situation that the object was rested. On the other hand, in the uniform motion they thought that given force was bigger than friction force.
The friction of an uniform motion object makes a balance of force as acting in the opposite direction that the object is moving. But they were not aware that uniform motion must be considered as the same situation as rest.
Basically friction force acts in the opposite direction of the movement So the students tried to find not the direction of movement but that of force. They misconceived the object was moving in the direction of given force. They thought that the friction force between solids was in proportion to the scale of contact area. The friction force between solids is concerned with just the weight, if the surfaces of friction have the same condition, but they seem to be preferred the surfaces of contact.
They tend to think of friction intuitively according to the experience and sense that they got from daily life. As a result we need to instruct the clear concept about the friction force.