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All Journal Media Pendidikan Matematika
Rita Destini
Pendidikan Matematika, FKIP, Universitas Muslim Nusantara Al Washliyah, Medan
Computer Science & IT Education Environmental Science Mathematics Social Sciences

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Perbedaan Peningkatan Kemampuan Berpikir Kritis dan Kreatif Matematis Siswa Melalui Penerapan Model PBL di SMP Nurul Huda Medan Darmiati Darmiati; Dedy Juliandri Panjaitan; Rita Destini; Cut Latifah Zahari
Media Pendidikan Matematika Vol. 14 No. 1 (2026): J-MPM
Publisher : Program Studi Pendidikan Matematika, FSTT, Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/mpm.v14i1.19949

Abstract

This study aimed to analyze differences in the improvement of students' mathematical critical and creative thinking abilities between Problem Based Learning (PBL) and direct instruction. The study used a quasi-experimental method with a pretest-posttest control group design. The population was all eighth-grade students of SMP Nurul Huda Medan, and the samples were class VIII-A as the experimental group (28 students) and class VIII-B as the control group (29 students), selected through random sampling. Data were collected using essay tests measuring mathematical critical and creative thinking on similarity material, supported by observation and documentation. The data were analyzed using normalized gain, Kolmogorov-Smirnov normality test, Levene homogeneity test, Mann-Whitney test, independent sample t-test, and Pearson correlation. The results showed that PBL produced higher improvement than direct instruction. The mean N-gain of critical thinking was 0.479 in the PBL group and 0.381 in the direct instruction group, with Mann-Whitney significance of 0.003. The mean N-gain of creative thinking was 0.533 in the PBL group and 0.435 in the direct instruction group, with t-test significance of 0.013. Critical and creative thinking also had a strong positive correlation (r = 0.727; p = 0.000). Therefore, PBL is effective for improving students' mathematical critical and creative thinking abilities.
Co-Authors Darmiati Darmiati Dedy Juliandri Panjaitan Zahari, Cut Latifah