The Influence of Realistic Mathematics Approach on Mathematical Problem Solving Ability of Students of SMP 4 Medan

Intan Udana Siahaan

doi:10.15575/gdcs.v63i.3378

Authors

Intan Udana Siahaan Postgraduate Mathematics Education Study Program, Medan State University, Indonesia

DOI:

https://doi.org/10.15575/gdcs.v63i.3378

Keywords:

Problem-Based Learning, Mathematical Problem-Solving Ability, Mathematics Learning, Junior High School

Abstract

This study aims to determine the improvement of students' mathematical problem-solving abilities through the implementation of the Problem Based Learning (PBL) model in junior high school students. This research employed a quantitative approach using a pre-experimental method with a One Group Pretest-Posttest Design. The participants consisted of 30 eighth-grade students selected through purposive sampling. The research instrument was a mathematical problem-solving ability test consisting of five essay questions validated by experts. Data were analyzed using normality tests, paired sample t-tests, and N-Gain analysis. The results showed that the average pretest score was 58.47 and increased to 83.13 in the posttest. The paired sample t-test indicated a significance value of 0.000 < 0.05, showing a significant difference between pretest and posttest scores. Furthermore, the average N-Gain score was 0.60, categorized as moderate. These findings indicate that the Problem Based Learning model effectively improves students' mathematical problem-solving abilities. Therefore, PBL can be used as an alternative instructional model to foster higher-order thinking skills in mathematics learning.

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