<![CDATA[This quasi-experimental research aimed to find out the effectiveness of reciprocal teaching in terms of student’s mathematical problems solving skill. The population in this research was all students of grade eighth of SMPN 8 Bandarlampung on academic year of 2018/2019. The samples of this research were students of class VIII B and VIII D selected by using purposive sampling technique. This research used posttest only control design. The research data were obtained by the essay test of mathematical problems solving skill on topic of relation and function. Analysis of research data used the t-test and proportion test. Hypothesis test results showed that student’s mathematical problem solving abilities in the reciprocal teaching class was higher than the covensional class, and proportion of students with good categorized mathematical problem solving abilities more than 60%. Based on the results of this research and discussion, concluded that reciprocal teaching model was effective in terms of student’s mathematical solving problems skill.Penelitian eksperimen semu ini bertujuan untuk mengetahui efektivitas model reciprocal teaching ditinjau dari kemampuan pemecahan masalah matematis siswa. Populasi penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 8 Bandar Lampung semester ganjil tahun pelajaran 2018/2019. Sampel penelitian ini adalah siswa kelas VIII B dan VIII D yang dipilih menggunakan teknik purposive sampling. Penelitian ini menggunakan posttest only control design. Data penelitian diperoleh dari tes kemampuan pemecahan masalah berbentuk uraian pada topik relasi dan fungsi. Analisis data penelitian menggunakan uji-t dan uji proporsi. Hasil uji hipotesis menunjukkan kemampuan pemecahan matematis siswa pada pembelajaran reciprocal teaching lebih tinggi daripada pembelajaran konvensional, dan proporsi siswa dengan kemampuan pemecahan masalah matematis terkategori baik lebh dari 60%. Berdasarkan hasil penelitian dan pembahasan, model reciprocal teaching efektif ditinjau dari kemampuan pemecahan masalah matematis siswa.Kata kunci: efektivitas, pemecahan masalah matematis, reciprocal teaching]]>
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