August 11, 2025Open Access

Effectiveness of Problem Based Learning Model on Student Learning Outcomes of Grade XI on Reaction Rate Material

Puntos clave

Student learning outcomes improved significantly from a pretest average of 29.6 to a posttest average of 77.2 following problem based learning interventions.
The N-Gain value of 0.68 suggests a medium level of effectiveness in enhancing student learning outcomes in reaction rate material.
Using a one group pretest-posttest design, the study involved 25 students in grade XI MIPA 1 at SMAN 3 Sampolawa.
Responses from students indicated a very good perception of the problem based learning model, enhancing teacher and student interactions.

Resumen

Research has been conducted on the effectiveness of Problem Based Learning model on the learning outcomes of Class XI students of SMAN 3 Sampolawa on reaction rate material. This study aims to determine the effectiveness of Problem Based Learning model on student learning outcomes on reaction rate material. The subjects in this study were 25 students of class XI MIPA 1. This type of research is pre-experiment with One Group Pretest-Posttest design. The research instruments included a learning outcome test consisting of 20 multiple choice questions and an observation sheet. The results showed that the average pretest score of 29.6 increased to 77.2 in the posttest. The effectiveness of learning based on the N-Gain value of 0.68 is included in the medium category, so the Problem Based Learning model is declared effective in improving student learning outcomes. Students' responses to the learning model were classified as very good, while the implementation of learning by teachers and students was considered good and experienced an increase. Keywords: Effectiveness, Problem Based Learning, Learning Outcomes, Reaction Rate

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