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All Journal Galaxy: Jurnal Pendidikan MIPA dan Teknologi
Auliya Febriana
Institut Ahmad Dahlan Probolinggo
Chemistry Computer Science & IT Education Mathematics Physics

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Pengaruh Metode Discovery Learning Terhadap Hasil Belajar Matematika Materi Bangun Datar Pada Siswa Kelas V SD Auliya Febriana; Aghna Ikhtiara Hendra Rachman; Afrilina Raudhotul Jannah; Nur Wiji Sholikin
Galaxy: Jurnal Pendidikan MIPA dan Teknologi Vol. 3 No. 1 (2026): Galaxy: Jurnal Pendidikan MIPA dan Teknologi
Publisher : Yayasan Insan Mulia Bima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59923/galaxy.v3i1.808

Abstract

This study was inspired by fifth-grade elementary school students' poor performance in mathematics, particularly in plane figures, due to the widespread use of the lecture method, which tends to make students docile and unmotivated. Therefore, the purpose of this study is to ascertain how the Discovery Learning approach affects the academic performance of thirty fifth-grade students at SDIT Tahfidz Bintangku in Probolinggo City, particularly in the field of plane figures. Any causal interpretation must take into consideration risks to internal validity because the approach was a quantitative study using a pre-experimental design of the one-group pretest-posttest type without a control group. The study used written pretest and posttest instruments, whose reliability was evaluated using Cronbach's Alpha (α = 0.87, high category) and whose validity was evaluated using Pearson's product-moment correlation. With a significance level of 0.000 < 0.05 and an average N-gain Score of 0.42 (moderate category) and a Cohen's Effect Size of 1.23 (large effect category), data analysis using the Paired Samples t-Test with IBM SPSS Statistics showed an increase in the mean score from 40.83 on the pre-test to 65.73 on the post-test; as a result, H1 is accepted. Therefore, it can be said that the Discovery Learning approach significantly improves fifth-grade elementary school students' learning outcomes in the area of plane figures; however, given the limitations of the research design, which did not include a control group, causal generalizations should be made with caution.
Analisis Kesulitan Siswa SMP Kelas VII Dalam Menyelesaikan Soal Geometri Auliya Febriana; Ramadan Kristian Novianto; Lailatul Ramadani; Nur Wiji Sholikin
Galaxy: Jurnal Pendidikan MIPA dan Teknologi Vol. 2 No. 2 (2025): Galaxy: Jurnal Pendidikan MIPA dan Teknologi
Publisher : Yayasan Insan Mulia Bima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59923/galaxy.v2i2.710

Abstract

Geometri merupakan salah satu cabang matematika yang memiliki peran fundamental dalam sistem pendidikan sekolah menengah pertama, namun siswa sering mengalami kesulitan dalam menyelesaikan soal-soal geometri yang melibatkan proses kognitif kompleks seperti pemahaman konsep, penalaran logis, dan visualisasi spasial. Penelitian ini bertujuan untuk menganalisis kesulitan siswa dalam menyelesaikan soal geometri pada siswa SMP kelas VII. Metode penelitian yang digunakan adalah kualitatif deskriptif dengan teknik pengumpulan data melalui tes, wawancara, dan kuesioner yang dianalisis menggunakan triangulasi data. Subjek penelitian adalah 30 siswa kelas VII SMP Darul Akhlaq Kabupaten Probolinggo yang terdiri dari 15 siswa laki-laki dan 15 siswa perempuan. Hasil penelitian menunjukkan bahwa mayoritas siswa mengalami kesulitan signifikan dalam memahami konsep geometri, terutama dalam mengingat rumus (86,7%), membayangkan bentuk bangun (80%), dan memahami konsep luas (76,7%). Kesulitan ini berakar pada fondasi pemahaman yang lemah sejak awal pembelajaran dan metode pengajaran konvensional yang bersifat teacher-centered. Penelitian ini merekomendasikan implementasi pembelajaran kolaboratif dengan pendekatan konstruktivis yang lebih konkret dan visual untuk meningkatkan pemahaman geometri siswa.
Co-Authors Afrilina Raudhotul Jannah Aghna Ikhtiara Hendra Rachman Lailatul Ramadani Nur Wiji Sholikin Ramadan Kristian Novianto