Supporting 8th Grade Of Junior High School Students’ Understanding Of The Area Of A Circle

Rejeki, Sri and Ilma, Ratu and Hartono, Yusuf and Wijers, Monica and Eerde, Dolly van (2014) Supporting 8th Grade Of Junior High School Students’ Understanding Of The Area Of A Circle. In: Ratu Ilma (Eds).The Second South East Asia Design/ Development Research (SEA-DR) International Conference, April 26-27,2014, Unsri, Palembang, April 26th-27th,2014, Palembang.

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    Abstract

    This study aims at supporting 8th graders of Junior High School to understand the concept of the area of a circle. It seems a little bit late since students have started to learn about the area of a circle since they were in 6th grade of Elementary School. However, the school practices make students focus on memorizing formulas instead of understanding concepts. Meanwhile, it is important to make students not merely recalling formulas but also understanding concepts, including the concepts of the area of a circle, which is being the topic chosen in this study. Hence, a set of learning activities which is divided into six lessons were designed based on Realistic Mathematics Education (RME) approach. Yet, this paper describes more about the third lesson which is about estimating the area of irregular plane figures and the area a circle using a grid paper. Design research was used as the research approach for this study and the data were collected through students’ written work, video registration, students’ interview, and field notes during the teaching experiment. Six students of the 8th grade of Junior High School (SMP N 1 Palembang) were involved in the teaching experiment. And, the results shows that those activities bring the students to gradually understand the concept of the area of a circle. Nevertheless, the students were coming back to the formal way to determine the area of a circle because it is difficult for them to estimate the area of a circle using a grid paper

    Item Type: Conference or Workshop Item (Keynote)
    Uncontrolled Keywords: Area, circle, reshaping, making grids, design research, realistic mathematics education
    Subjects: L Education > L Education (General)
    Divisions: Faculty of Teacher Training and Science Education > Department of Mathematics and Sciences Education > Mathematics Education
    Depositing User: Rudi Kule
    Date Deposited: 25 Feb 2015 14:33
    Last Modified: 25 Feb 2015 14:33
    URI: http://eprints.unsri.ac.id/id/eprint/5221

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