In this research, we aimed to reveal the fact about the students’ ability of hypothesis-formulating in earth science in elementary school. In order to achieve the purpose, first, we studied the characteristics of the hypothesis formulating about earth science in the context of science education and philosophy of science. Second, we defined the domain-specific hypothesis-formulating process in earth science, on the basis of the existing model of domain-general hypothesis formulating process. Next, we made the survey question on the thinking process based on the existing domain-general survey question. Furthermore, we measured both domain-specific and the domain-general abilities, and compared the hypothesis formulating abilities. As a result, we found that the students had difficulty inferring as the domain-specific ability in earth science. Specifically speaking, they had difficulty supposing the events in the past or the wide range and selecting one of the multiple suggestive hypotheses which they thought. Thus, we made it clear that the students were less likely to get the ability of hypothesis formulating in earth science.
View full abstract