THE EFFECT OF THE PROJECT BASED LEARNING MODEL ON THE LEARNING OUTCOMES OF HIGH SCHOOL STUDENTS IN PASCAL'S LEGAL MATERIAL

Abstract

This study aims to analyze the influence of the Project-Based Learning (PjBL) model on the
learning outcomes of high school students in Pascal's Law material. The background of this research is
the low level of students' understanding of Pascal's Law, which is often taught theoretically, so it is less
contextual and can be applied. This study uses a quantitative approach with quasi-experimental methods
and Pretest-Posttest Design of Control Groups. The research subjects were 11th grade students of SMA
Negeri 1 Sei Bamban for the 2024/2025 academic year, with a total sample of 60 students, consisting
of 30 students in the experimental class and 30 students in the control class, selected using purposive
sampling. The research instrument consisted of a multiple-choice learning outcome test with 20
validated items and an observation sheet of student activities. The results showed that the average
pretest scores of the two classes were relatively equivalent (experimental = 45.33; control = 45.17) with
a significance value of 0.960 (>0.05), indicating no significant difference in initial ability. After
treatment, the average post-experimental class score increased to 78.67, while the control class only
reached 66.33. The t-test reveals a significant difference between the two classes (Sig. <0.05). Student
activity in the experimental class was also recorded high, with an average of 79.97% in the active
category. It can be concluded that the application of the Project-Based Learning model has a significant
influence on improving student learning outcomes in Pascal's Law compared to conventional learning.
These findings reinforce previous literature on the effectiveness of PjBL as an innovative learning
strategy that is able to connect abstract concepts with students' real-life experiences.