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All Journal JGK (Jurnal Guru Kita) Jurnal Diferensiasi Pendidikan
Novita Sari Hutauruk
Universitas HKBP Nommensen
Arts Education Environmental Science Social Sciences Other

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Perbedaan Kemampuan Penalaran Matematis Siswa Menggunakan Pendekatan Pemecahan Masalah dengan Pendekatan Metakognitif pada Materi SPLDV Kelas VIII SMP Negeri 2 Gebang Esther Arnhilda Situmorang; Novita Sari Hutauruk
Jurnal Diferensiasi Pendidikan Vol 2 No 2 (2026): Edisi Januari 2026
Publisher : Fakultas Keguruan Ilmu Pendidikan Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/jdp.v2i2.2139

Abstract

This study aimed to determine the differences in students’ mathematical reasoning abilities between learning using a problem-solving approach and a metacognitive approach on the topic of Systems of Linear Equations in Two Variables (SPLDV). This research employed a quantitative method with a quasi-experimental design. The population of the study consisted of all eighth-grade students of SMP Negeri 2 Gebang, comprising six parallel classes. The research sample was selected using purposive random sampling, in which class VIII-2 was assigned as Experimental Class I using the metacognitive approach, and class VIII-3 as Experimental Class II using the problem-solving approach. The research instrument was an essay test measuring students’ mathematical reasoning abilities, which had been validated and tested for reliability. Data were collected through pre-tests and post-tests and analyzed using normality tests, homogeneity tests, N-Gain tests, and an Independent Sample t-test. The results showed that the post-test data from both classes were normally distributed and homogeneous. The Independent Sample t-test indicated a significant difference in students’ mathematical reasoning abilities between the two learning approaches. Although the N-Gain analysis revealed that both approaches were categorized as less effective, the problem-solving approach demonstrated better results than the metacognitive approach, as indicated by higher mean scores and N-Gain values. Therefore, the problem-solving approach is recommended for teaching SPLDV to improve students’ mathematical reasoning abilities
Pengaruh Media Podcast Anchor terhadap Keterampilan Argumentasi Lisan Siswa Sekolah Menengah Atas Novita Sari Hutauruk; Juni Agus Simaremare; Sarma Panggabean
JGK (Jurnal Guru Kita) Vol. 10 No. 4: September 2026
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jgk.v10.i4.76464

Abstract

Rendahnya keterampilan argumentasi lisan siswa SMA Parulian 2 Medan yang berada di bawah Kriteria Ketuntasan Minimal (KKM 75) menjadi latar belakang dilakukannya penelitian ini. Penelitian ini bertujuan untuk menganalisis pengaruh pemanfaatan media audio podcast Anchor terhadap keterampilan argumentasi lisan siswa. Metode penelitian menggunakan pendekatan kuantitatif eksperimen dengan one-group pretest-posttest design. Subjek penelitian terdiri dari 27 siswa kelas XI MIA yang bertempat di SMA Parulian 2 Medan pada semester genap tahun ajaran 2025/2026. Alur penelitian dilaksanakan secara bertahap melalui pemberian pretest, perlakuan (treatment) media Anchor, serta posttest. Teknik pengumpulan data dilakukan menggunakan tes praktik berbicara lisan yang dinilai berdasarkan lima aspek argumentasi. Teknik analisis data mencakup analisis deskriptif (rata-rata dan simpangan baku) serta analisis inferensial dengan uji normalitas Lilliefors dan uji-t berpasangan (Paired Samples t-Test). Hasil penelitian menunjukkan rata-rata pretest sebesar 52,44 (SD=13,64, kategori kurang) meningkat menjadi 81,48 (SD=6,28, kategori baik) pada posttest. Uji hipotesis menghasilkan thitung =10,37>ttabel =2,056 (α=0,05, dk=26), yang berarti H0 ditolak dan Ha diterima. Disimpulkan bahwa pemanfaatan media Anchor berpengaruh signifikan terhadap peningkatan keterampilan argumentasi lisan siswa.
Co-Authors Esther Arnhilda Situmorang Sarma Panggabean SIMAREMARE, JUNI AGUS