<![CDATA[Tujuan penelitian untuk menganalisis pengaruh model pembelajaran problem based learning terhadap kemampuan pemecahanmasalah matematis dan self-efficacy siswa, untuk mengetahui peningkatan kemampuan pemecahan masalah matematis dan self-efficacy siswa melalui model pembelajaran problem based learning. Jenis penelitian quasi eksperimen dan desain penelitian One Group Pretest-Posttest Design. Instumen penelitian yang digunakan yaitu pretest dan posttest kemampuan pemecahan masalah matematis dan angket self-efficacy siswa. Berdasarkan hasil pengolahan data menggunakan uji Paired Sample t-test menunjukkan bahwa pembelajaran matematika yang diajarkan melalui model pembelajaran problem based learning dapat berpengaruh positif terhadap kemampuan pemecahan masalah matematis dan self-efficacy siswa (P_value < 0,05), Pembelajaran matematika yang diajarkan melalui model pembelajaran problem based learning dapat meningkatkan kemampuan pemecahan masalah matematis dikategori tinggi (N_gain = 0,73) dan self-efficacy. dikategori sedang (N_gain = 0,62). Hasil ini mengungkapkan bahwa model pembelajaran problem based learning dapat menjadi salah satu solusi dalam mengembangkan kemampuan pemecahan masalah matematis dan self-efficacy siswa sehingga pemecahan masalah siswa meningkat, khususnya pembelajaran matematika.The research objective to analyze the effect of problem based learning learning model on students' mathematical problem solving abilities and self-efficacy, to determine the improvement of students' mathematical problem solving abilities and self-efficacy through problem based learning learning models. The type of research is quasi-experimental and the research design is One Group Pretest-Posttest Design. The research instruments used were pretest and posttest of mathematical problem solving abilities and student self-efficacy q questionnaire. Based on the results of data processing using the Paired Sample t-test, it shows that learning mathematics taught through the problem based learning model can have a positive effect on students' mathematical problem solving abilities and self-efficacy (P_value < 0.05). problem based learning can improve mathematical problem solving skills in the high category (N_gain = 0.73) and self-efficacy. categorized as moderate (N_gain = 0.62). These results reveal that the problem based learning model can be a solution in developing students' mathematical problem solving abilities and self-efficacy so that students' problem solving increases, especially in learning mathematics]]>
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