Publication Search

This study was to find out how the application of the Problem Based Learning (PBL) model to the topic of Colligative Properties in the science program at SMA Negeri 1 Babalan Class XII academic year 2021–2022 would increase students' problem-solving skills and learning activities. Three cycles of action research were used in this study. 32 SMA Negeri 1 Babalan students from the first semester of the academic year 2021–2022 served as the study's subjects. The findings came from watching students engage in learning activities and testing their capacity to solve problems at each stage of the Cycle. The results demonstrated that 1) college students' problem-solving skills improved by implementing the PBL model on the Colligative Properties subject, with average values from Cycles I to II and III of 56, 77, and 87, respectively, while the percentage of classical completion from Cycles I to II and III was 44%, 62,5%, and 87%, with gains from Cycles I to II of 0,083 and from Cycles II to II equal to 0,35; 2). Applying the PBL model to the topic of Colligative Properties resulted in an increase in the students' learning activities, with an average value of 75 in sufficient criteria, 77 in sufficient criteria, and 85 in good criteria from Cycle I to Cycle II and Cycle III, respectively.

This study aims to describe students' learning barriers in solving SPLDV questions based on problem solving abilities. This research uses descriptive qualitative research, and the sampling technique uses purposive sampling technique. This research was conducted at Sungai Kakap 1 Public Middle School, the data used were the results of researchers to clarify students' obstacles in answering questions based on problem-solving abilities with data sources, namely class VIII students of SMP 1 Sungai Kakap. Data collection techniques used measurement techniques, direct communication techniques and indirect communication techniques with data collection tools in the form of test questions, interview guides and documentation. The data analysis techniques used are data reduction, data presentation, and drawing conclusions. In this study it was concluded that the students' barriers in the high group were wrong in determining the formula and wrong in the concept of completion, the students' barriers in the medium group were wrong in determining the formula, discrepancies in using the formula to answer a problem and did not re-examine the answers, and student barriers in the low group were unable to determine the formula and solve the problem on the question then also did not re-check the answer after completing the given question.