Efektivitas Model Problem Based Learning dan Project Based Learning Berbantuan GeoGebra Terhadap Kemampuan Pemecahan Masalah

This study is an experimental study that aims to determine the effectiveness of the Problem Based Learning (PBL) and Project Based Learning (PJBL) models assisted by GeoGebra on students' problem-solving abilities in the Two-Variable Linear Inequality System material at SMA Negeri 1 Jepara. The population in this study were all grade X students in the 2024/2025 academic year. The research sample consisted of three classes, namely class X-1 as experimental group 2 (PJBL), X-2 as experimental group 1 (PBL), and X-3 as the control group (conventional learning). Data collection techniques used problem-solving ability tests, student activity observation sheets, and documentation. The results of the study showed that: (1) there was a significant difference in problem-solving abilities between the three learning models used; (2) the problem-solving abilities of students using the PBL model were higher than conventional learning; (3) the problem-solving abilities of students with the PJBL model were also higher than conventional learning; (4) there was no significant difference between the problem-solving abilities of students using the PBL and PJBL models; (5) Student activity contributes to problem solving ability by 21.2% in the PBL model and 56.3% in the PJBL model. This finding shows that both the PBL model and the GeoGebra-assisted PJBL are effective in improving students' mathematical problem solving abilities, with a greater influence of activity in the PJBL model.