Model Pembelajaran Problem Solving: Pencapaian Kompetensi Siswa, Kemampuan Pemecahan Masalah, Keterampilan Kolaborasi dan Self Efficacy

Abstract

The implementation of the Problem Solving learning model in this study was expected to improve students' competency achievement while supporting their collaboration skills, self-efficacy, and mathematical problem-solving ability. The sample consisted of tenth-grade students selected using a purposive sampling technique based on relatively similar initial mathematical abilities. This study employed a pre-experimental research design using a one-group pretest–posttest design. The research instruments included a mathematical problem-solving test, a self-efficacy questionnaire, a collaboration skills questionnaire, and an observation sheet of the learning activities. The instruments were validated through expert judgment, and their reliability was examined using Cronbach's Alpha coefficient. Data were analyzed using the paired-samples t-test for normally distributed data and the Wilcoxon signed-rank test for data that were not normally distributed. The results showed that the mean pretest and posttest scores for competency achievement were 30.67 and 53.33, respectively. The mean pretest and posttest scores for students' collaboration skills were 38.73 and 40.07, respectively. The mean pretest and posttest scores for students' self-efficacy were 69.33 and 73.27, respectively. Meanwhile, the mean pretest and posttest scores for students' mathematical problem-solving ability were 36.57 and 79.93, respectively. The significance values for the pretest–posttest comparisons of collaboration skills, competency achievement, self-efficacy, and mathematical problem-solving ability were all < 0.05. The findings indicated that the effectiveness of the problem solving learning model was reflected not only in the improvement of students' competency achievement but also in the enhancement of their mathematical problem-solving ability, self-efficacy, and collaboration skills.