Vol. 8 No. 3 (2026): Edisi September
Open Access
Peer Reviewed

Peningkatan Kemampuan Berpikir Kritis Matematis Siswa melalui Metode Problem Solving dengan Focus Group Discussion (FGD) di SMP Muhammadiyah 3 Bandar Lampung

Authors

Athian Sulthon , Suryatul Aini Asyhara , Fungky Mariani

DOI:

10.29303/jm.v8i3.12315

Published:

2026-09-30

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Abstract

Abstract
This study aims to determine the improvement of students’ mathematical critical thinking skills through the Problem Solving method integrated with Focus Group Discussion (FGD) at SMP Muhammadiyah 3 Bandar Lampung. The background of this research is the low level of students’ mathematical critical thinking skills, which is reflected in students’ difficulties in analyzing problems, providing logical arguments, and evaluating mathematical solutions. This research used a quantitative approach with a quasi-experimental design employing a pretest-posttest control group design. The subjects of the study consisted of class VIII D as the experimental class and class VIII E as the control class. Data were collected through mathematical critical thinking tests, observation, and documentation. The results showed that students taught using the Problem Solving method with FGD experienced a more significant improvement in mathematical critical thinking skills compared to students who received conventional learning. The integration of Problem Solving and FGD encouraged students to actively discuss, analyze, and evaluate mathematical problems collaboratively. Therefore, the application of the Problem Solving method integrated with FGD can be used as an effective learning alternative to improve students’ mathematical critical thinking skills in mathematics learning.

Keywords:

mathematical critical thinking problem solving focus group discussion mathematics learning quasi experiment

References

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Author Biographies

Athian Sulthon, universitas muhammadiyah Lampung

Author Origin : Indonesia

Suryatul Aini Asyhara, Pendidikan Matematika, FKIP, Universitas Muhammadiyah Lampung, Bandar Lampung

Author Origin : Indonesia

Fungky Mariani, Pendidikan Matematika, FKIP, Universitas Muhammadiyah Lampung, Bandar Lampung

Author Origin : Indonesia

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How to Cite

Sulthon, A., Asyhara, S. A., & Mariani, F. (2026). Peningkatan Kemampuan Berpikir Kritis Matematis Siswa melalui Metode Problem Solving dengan Focus Group Discussion (FGD) di SMP Muhammadiyah 3 Bandar Lampung. Mandalika Mathematics and Educations Journal, 8(3), 2467–2479. https://doi.org/10.29303/jm.v8i3.12315