Abstract: The purpose of this research is to improve the operation of fragtion arithmetic skill through problem posing model. This research used a classroom action research method with 2 cycles. The research subject is the fifth grade students of State Primary School of 01 Kalijirak Tasikmadu Karanganyar in the academic year 2012/2013 consist of 33 students. Its data were gathered through observation, in-depth interview, documentation, and test. The data were then analyzed by using an interactive model of analysis. The average score of class before action (pre-cycle) is 67; in cycle I the average score improves to 76; and in cycle II improves to 86. Based on the results of the analysis, a conclusion is drawn that using problem posing model can improve the operation of fragtion arithmetic skill for the fifth grade students of State Primary School of 01 Kalijirak Tasikmadu Karanganyar in the academic year 2012/2013.
Keywords: the operation of fragtion skill, arithmetic, Problem posing model
Abstrak: Tujuan penelitian ini adalah meningkatkan keterampilan operasi hitung pecahan melalui model Problem Posing. Penelitian ini merupakan penelitian tindakan kelas dengan dua siklus. Subjek penelitiannya adalah siswa kelas V SD Negeri 01 Kalijirak Tasikmadu Karanganyar yang berjumlah 33 siswa. Teknik pengumpulan datanya yaitu: observasi, wawancara, dokumentasi dan tes. Teknik analisisnya adalah model analisis interaktif. Nilai rata-rata kelas yaitu pratindakan sebesar 67; siklus I naik menjadi 76 dan pada siklus II naik menjadi 86. Berdasarkan hasil penelitian, disimpulkan bahwa penggunaan model Problem Posing dapat meningkatkan keterampilan operasi hitung pecahan pada siswa kelas V SD Negeri 01 Kalijirak Tasikmadu Karanganyar tahun ajaran 2012/2013.
Kata kunci: Model Problem Posing, keterampilan operasi hitung pecahan
