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All Journal Dinamika Pembelajaran : Jurnal Pendidikan dan Bahasa
Gusti Isrullah
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Humanities Education Languange, Linguistic, Communication & Media Mathematics Other

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Pengaruh Model Pembelajaran Kooperatif Tipe Group Investigation Berbasis Etnomatematika terhadap Kemampuan Berpikir Kritis Matematis Siswa pada Materi Teorema Pythagoras Gusti Isrullah; Mariyam Mariyam; Buyung Buyung
Dinamika Pembelajaran : Jurnal Pendidikan dan bahasa Vol. 3 No. 3 (2026): Agustus: Dinamika Pembelajaran : Jurnal Pendidikan dan bahasa
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/dilan.v3i3.3423

Abstract

This study aims to determine the differences in students’ mathematical critical thinking skills between those who receive ethnomathematics-based Group Investigation (GI) cooperative learning and those who receive direct instruction on the Pythagorean Theorem, to determine the magnitude of the model’s effect, and to describe students’ learning activities during the learning process. The study employed a quantitative approach using a quasi-experimental method with a Posttest-Only Control Group Design. The research sample consisted of 56 eighth-grade students at SMP Negeri 8 Singkawang, with Class VIII A serving as the experimental group and Class VIII B as the control group, selected through purposive sampling. Data were collected using an essay test measuring mathematical critical thinking skills and a learning activity observation sheet. Data analysis included normality and homogeneity tests, an independent-samples t-test, effect size analysis, and the percentage of learning activities. The results showed that the experimental group obtained a mean posttest score of 79.83, while the control group obtained 64.84.
Co-Authors Buyung Buyung Mariyam Mariyam