121st General Meeting of the KCS

Type Poster Presentation
Area Chemistry Education
Room No. Event Hall
Time 4월 19일 (목요일) 11:00~12:30
Code EDU.P-668
Subject An Analysis of Stated Model for Floating and Sinking Phenomena on the Chemical Domain
Authors Sung-ki Kim, Seounghey Paik1,*
Gwangju Science Academy for the Gifted, Korea
1Department of Chemical Education, Korea National University of Education, Korea
Abstract The chemistry treats these phenomenon consistently in the 'object and matter' unit in the third grade of elementary school and 'material characteristics' unit in middle school regardless of curriculum revision. This study has focused on the problem of this phenomenon which is still in the alternative concept, not only for students but also for teachers, even though this phenomenon is constantly covered in chemistry. The subjects are textbooks covering 'object and matter' unit in elementary science and 'material characteristics' in middle school science from 7th curriculum to 2009 revision curriculum. As a result, first, text books explained this phenomenon by the property of matter(matter viewpoint) rather than looking at fluid and object at the same time. Second, statements have no connection with the physical domain. Third, it presented inconsistent cases with the curriculum. As the properties of the pure matter, students learn the density. However, the examples covered are mainly mixtures. Finally, there was no explanation for the prerequisites. When dealing with this phenomenon using the density difference, there is no explanation of the precondition even though the phenomenon can be predicted using the density difference after assuming that the object is completely immersed in the stationary oil system. The absence of these preconditions can be difficult for students to understand the science model. As such, there is a problem with the statement of the floating and shining phenomena that is covered in the existing chemistry domain, and these statements can be difficult to release to the student's alternative concept or to have a correct viewpoint. Thus, a new method of statement that improved these problems in the field of chemistry is needed.
E-mail mcarey2000@nate.com