Promoting Students’ Understanding Of The Addition Of Fractions

Lestiana, Herani Tri and Abadi, Abadi and Budiarto, Mega Teguh and Abels, Meike J and Eerde, Dolly van (2014) Promoting Students’ Understanding Of The Addition Of Fractions. 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

    Many researchers have documented that students consider fractions as a difficult topic because there are many rules in operating fractions. In Indonesia, many teachers place more emphasize on the algorithms instead of students’ understanding of the concept. Thus, students tend to memorize the algorithms without understanding the reasoning behinds it. Consequently, students often made mistakes in applying the algorithms, such as doing the procedure ‘top+top and bottom+bottom’ in solving the addition of fractions problems. Therefore, there is a need to develop instructional activities that support students’ understanding of the addition of fractions. This study used design research approach and applied the idea of Realistic Mathematics Education (RME) which suggests that students have to construct their understanding actively by exploring contexts and models. The models used in this study were paper strips and bar model. This study was conducted in the third grade of elementary school in three cycles, which each cycle consisted of three meetings. The result of the first cycle showed that the students began to develop their fractions sense after producing measuring strips by themselves by using paper strips. After exploring the measuring strips, they were able to grasp the idea of the equivalent fractions. Afterwards, students could translate their insight of equivalence of fractions in the measuring strips to find the common denominator in adding fractions with either the same or the different denominators in the bars. In conclusion, the result of the first cycle provides evidence that the use of paper strips and bar model can help students in understanding the addition of fractions

    Item Type: Conference or Workshop Item (Keynote)
    Uncontrolled Keywords: Addition of fractions, RME, design research, fraction strips, bar model
    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: 24 Feb 2015 20:13
    Last Modified: 24 Feb 2015 20:13
    URI: http://eprints.unsri.ac.id/id/eprint/5201

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