Abstract
This study aimed to assess the development of upper graders' understanding of the tentativeness of scientific knowledge by using the revised NSKS at three points ever two years. The survey asked the following questions. (1) Were there any changes in upper graders' understanding of the mode of each statement comprising the subscales below? (2) Which statements did upper graders' in elementary school misunderstand? Method: The revised NSKS was administered to 218 students in elementary school. The instrument contains 24 statements with a scale response with three choices. The subscales consisted of the following: creativity, development, parsimonious, and testability. Results: The results of the present survey can be summarized as follows: (1) There were changes in four statements in the subscale of testability. (2) Upper graders' misunderstood two statements in the subscales of parsimonious.
