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Efektivitas Penggunaan Alat Peraga Medan Magnet dalam Meningkatkan Literasi Sains Siswa Sekolah Dasar Kelas VI Ariefka, Reza; Rosely, Annisa
ALACRITY : Journal of Education Volume 5 Nomor 1 Februari 2025
Publisher : LPPPI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52121/alacrity.v5i1.710

This study aims to measure the effectiveness of magnetic field teaching aids in improving the scientific literacy of sixth-grade elementary school students. The research method used is a true experiment with a pretest-posttest control group design. The research sample consisted of two classes, namely the experimental class that used magnetic field teaching aids and the control class that used conventional learning methods. Data were collected through pretest and posttest tests, then analyzed using normality tests, homogeneity tests, Independent Sample t-tests, and N-Gain tests with the help of the SPSS version 25 application. The results showed that the average pretest score in the experimental class was 69.20, while in the control class, it was 62.13. After being given treatment, the average posttest score in the experimental class increased to 84.67, while in the control class, it only increased to 75.20. The results of the hypothesis test showed a significance value of 0.013, which means that there was a significant difference between the experimental class and the control class. In addition, the results of the N-Gain effectiveness test with a value of 56.7% showed an increase in students' scientific literacy skills using magnetic field teaching aids.

Pengaruh Pembelajaran Multirepresentasi Terhadap Kemampuan Literasi Sains Siswa Materi Gelombang Bunyi Di SD Aditya, Reviyanti; Ariefka, Reza
Elementary School: Jurnal Pendidikan dan Pembelajaran ke-SD-an Vol. 12 No. 2 (2025): ELEMENTARY SCHOOL (Jurnal Pendidikan dan Pembelajaran Ke-SD-an)
Publisher : Universitas PGRI Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31316/esjurnal.v12i2.4446

Penelitian ini bertujuan untuk mengkaji pengaruh pembelajaran multirepresentasi pada kemampuan literasi sains siswa mata pelajaran IPA (gelombang bunyi) kelas V di Sekolah Dasar Negeri 01 Tugu Harum. Pendekatan penelitian yang diterapkan, yaitu sistem kuantitatif dengan pendekatan eksperimen semu (Quasy Experiment) dengan design penelitian pretest-posttest. Sampel dalam penelitian ini 29 siswa kelas VA dan 29 siswa kelas VB. Teknik pengumpulan data menggunakan observasi, tes dan dokumentasi. Berdasarkan hasil uji normalitas yang dilakukan penerapan rumus Chi-Kuadrat dengan tingkat signifikansi 5%, keduanya tersebut dapat dianggap mengikuti distribusi normal. Hasil uji homogenitas kedua kelompok menunjukkan bahwa Fhitung (1,17) < Ftabel (1,79) berarti kedua kelompok bersifat homogen. Kesimpulan penelitian ini adalah pada proses pembelajaran di kelas eksperimen mendapat perlakuan dengan menggunakan model multirepresentasi Di sisi lain, kelas kontrol tidak mendapatkan perlakuan yang sama. Kemudian, kelas eksperimen diberikan pre-test dan mencatatkan skor rata-rata 28,1, setelah diberikan perlakuan dengan menggunakan model pembelajaran multirepresentasi skor rata-rata meningkat menjadi 78,13 dengan demikian pembelajaran multirepresentasi memberikan dampak yang signifikan terhadap kemampuan literasi sains siswa materi gelombang bunyi di Sekolah Dasar Negeri 01 Tugu Harum.

Pengaruh Model Pictorial Riddle Berbantuan Aplikasi Canva Terhadap Kemampuan Literasi Sains Siswa SD Materi Sifat-Sifat Benda Ariyanti, Etika; Ariefka, Reza
ALACRITY : Journal of Education Volume 5 Nomor 1 Februari 2025
Publisher : LPPPI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52121/alacrity.v5i1.704

This study aims to analyze the effect of the Pictorial Riddle learning model assisted by the Canva application on the scientific literacy skills of elementary school students on the material properties of objects. This study uses a quantitative method with a True Experimental Design. The research sample consisted of 22 fifth-grade students of SD Negeri 1 Karang Melati, which were divided into an experimental class (11 students) and a control class (11 students). The pre-test results showed an average score of 55.63 in the experimental class and 51.81 in the control class. After treatment, the post-test results increased to 73.18 in the experimental class and 61.81 in the control class. The Paired Sample T-Test test showed a significant difference between the pre-test and post-test with a sig. Value of 0.001 (<0.05), while the Independent Sample T-Test test showed a significant difference between the experimental and control classes with a sig. Value of 0.000 (<0.05). The results of this study indicate that the Pictorial Riddle model assisted by Canva significantly improves students' scientific literacy skills.

Efektivitas Penggunaan Alat Peraga Medan Magnet dalam Meningkatkan Literasi Sains Siswa Sekolah Dasar Kelas VI Rosely, Annisa; Ariefka, Reza
ALACRITY : Journal of Education Volume 5 Nomor 1 Februari 2025
Publisher : LPPPI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52121/alacrity.v5i1.710

This study aims to measure the effectiveness of magnetic field teaching aids in improving the scientific literacy of sixth-grade elementary school students. The research method used is a true experiment with a pretest-posttest control group design. The research sample consisted of two classes, namely the experimental class that used magnetic field teaching aids and the control class that used conventional learning methods. Data were collected through pretest and posttest tests, then analyzed using normality tests, homogeneity tests, Independent Sample t-tests, and N-Gain tests with the help of the SPSS version 25 application. The results showed that the average pretest score in the experimental class was 69.20, while in the control class, it was 62.13. After being given treatment, the average posttest score in the experimental class increased to 84.67, while in the control class, it only increased to 75.20. The results of the hypothesis test showed a significance value of 0.013, which means that there was a significant difference between the experimental class and the control class. In addition, the results of the N-Gain effectiveness test with a value of 56.7% showed an increase in students' scientific literacy skills using magnetic field teaching aids.

IMPACT OF URBAN DEVELOPMENT ON UV EXPOSURE: A CLUSTERING AND MACHINE LEARNING ASSESSMENT Sahroni, Taufik Roni, Mr.; Yasin, Verdi; Alfaris, Lulut; Ariefka, Reza; Siagian, Ruben Cornelius; Karim, Mohammad Alfin; Rahdiana, Nana; Suhara, Ade
Journal of Environmental Science and Sustainable Development Vol. 7, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

The relocation of Indonesia's capital city is anticipated to promote inclusive economic growth while embracing cultural diversity. However, this transition may affect ultraviolet (UV) radiation exposure patterns. The study investigated variations in UV exposure in the IKN region, focusing on urban development factors such as land use and population density that affect public health, sun protection, and skin cancer prevention. The research hypothesized that UV radiation is significantly correlated with these factors. UV Index data from 2010-2023, a hierarchical clustering method, identifies complex data patterns without determining the number of clusters. XGBoost, a machine learning model, was used for handling high-dimensional data and strong non-linear interactions, outperforming Random Forest in predicting Ultraviolet A variables. Analysis of variance (ANOVA) showed significant inter-group differences, which were validated by Tukey HSD post-hoc tests. Results showed that Cluster 4 was the region with the highest UV exposure. In contrast, Cluster 5 recorded the lowest, with exposure levels ranging from 6.61 to 15.82, a considerable difference of 9.21. The findings underscore the role of geographic and environmental factors in shaping UV exposure patterns, with implications for public health. Areas with high UV exposure face higher risks, including skin cancer and premature ageing. The predictive accuracy of the XGBoost model highlights its usefulness in addressing UV-related health risks. The study advocates for improved UV protection strategies and informed health policies to mitigate climate change impacts and promote sustainable urban development. The findings suggest that the development of data-driven early warning systems for UV radiation exposure could be implemented to improve public health policy and safety.

The Effect of Snakes and Ladders Game on Students’ Science Literacy on Solar System Materials in Elementary School Soleha, Siti; Ariefka, Reza
Edunesia : Jurnal Ilmiah Pendidikan Vol. 7 No. 1 (2026)
Publisher : Research, Training and Philanthropy Institution Natural Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51276/edu.v7i1.1463

The results of the 2022 PISA show a decline in Indonesian students' scientific literacy, necessitating innovation in learning media. This study aims to examine the effect of the Snakes and Ladders game on the scientific literacy of sixth-grade students at SDN 01 Tuguharum on the solar system. The Snakes and Ladders game was chosen because its visual, interactive, and rule-based nature is suitable for scientific concepts. The method used was quantitative with a Nonequivalent Control Group design. The sample consisted of 44 sixth-grade students divided into experimental and control groups. Data were collected through tests and documentation, then analyzed using instrument testing and hypothesis testing. The results showed that students in the experimental group scored higher than those in the control group (t = 11.99, p < 0.05), indicating that the Snakes and Ladders game media had a positive effect on students' scientific literacy. This finding contributes to improving students' ability to explain scientific phenomena. The implication is that Snakes and Ladders can serve as a practical and engaging alternative to science education in elementary schools.

BLACK HOLE EVAPORATION AND THE RECONSTRUCTION OF THE ONTOLOGY OF PHYSICAL REALITY FROM A RELATIONAL AND COSMOLOGICAL EMERGENCE PERSPECTIVE Ariefka, Reza; Sahroni, Taufik Roni; Siagian, Ruben Cornelius; Nurahman, Arip; Raisal, Abu Yazid
Jurnal Filsafat "WISDOM" Vol 36, No 1 (2026): (Article in Press)
Publisher : Fakultas Filsafat, Universitas Gadjah Mada Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jf.108753

This research is motivated by developments in modern physics which show that black holes, which in classical general relativity are considered the most stable and permanent entities in the universe, actually undergo evaporation through Hawking radiation. This phenomenon has profound philosophical implications regarding the nature of physical existence, the status of information, the structure of space-time, and the direction of cosmological time. This study aims to analyze the ontological and epistemological implications of black hole evaporation in the context of micro-macro relationships, relational ontology, and the concept of time as an emergent phenomenon. This study uses a qualitative method based on literature review and conceptual analysis by integrating the perspectives of theoretical physics, philosophy of science, and modern cosmology. The results of this study show that black hole evaporation confirms that there are no physical entities that are absolute and permanent. Physical existence is more accurately understood as a relational phenomenon that depends on the interaction between space-time geometry, quantum fluctuations, and cosmic thermodynamic processes. Furthermore, the black hole information paradox can be understood as a limitation of human epistemological description, rather than an ontological loss of physical reality. This research also confirms that the direction of time is a consequence of the emergence of increased entropy in the universe. The novelty of this research lies in the integration of the phenomenon of black hole evaporation with a structural-relational ontological approach to explain physical reality as a dynamic and emergent process.

Pengaruh Model Pembelajaran Project Based Learning Terhadap Kemampuan Literasi Sains Siswa Khafidotul Khoriyah; Reza Ariefka
Didaktika: Jurnal Kependidikan Vol. 14 No. 3 Agustus (2025): Didaktika Jurnal Kependidikan
Publisher : South Sulawesi Education Development (SSED)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58230/27454312.2357

Penelitian ini dilatarbelakangi oleh rendahnya kemampuan literasi sains siswa di SD Negeri Madugondo. Tujuan penelitian adalah untuk mengetahui pengaruh penggunaan model Project Based Learning (PjBL) terhadap peningkatan literasi sains siswa kelas V pada tahun ajaran 2024/2025. Penelitian menggunakan metode eksperimen dengan pendekatan kuantitatif. Sampel penelitian adalah seluruh siswa kelas V yang berjumlah 33 orang (total sampling). Teknik pengumpulan data meliputi tes, observasi, dan wawancara. Instrumen tes berupa soal pilihan ganda yang telah melalui uji validitas dan reliabilitas sebelum digunakan. Analisis data dilakukan dengan statistik deskriptif dan inferensial. Hasil penelitian menunjukkan bahwa penerapan model PjBL berpengaruh signifikan terhadap peningkatan kemampuan literasi sains siswa. Hal ini ditunjukkan dari adanya perbedaan hasil belajar sebelum dan sesudah perlakuan, serta hasil uji statistik inferensial yang mengonfirmasi pengaruh positif model PjBL. Dengan demikian, model Project Based Learning dapat dijadikan alternatif pembelajaran untuk meningkatkan literasi sains siswa sekolah dasar.

Numerical Analysis of Metric Perturbations, Spacetime Curvature, and Gravitational Wave Polarizations in Linearized General Relativity Using the Finite Difference Method Ariefka, Reza; Siagian, Ruben Cornelius; Sahroni, Taufik Roni; Nurahman, Arip
POSITRON Vol 16, No 1 (2026): Vol. 16 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v16i1.92372

The general theory of relativity states that small perturbations in the spacetime metric in a weak gravitational field can be treated as perturbations propagating on the Minkowski background. Although the analytical formulation of Einstein's linear equations has been well developed, numerical studies that integrate local metric perturbations, the curvature structure of space-time through the Ricci tensor, the dynamics of gravitational wave polarization, and reduction to Newton's law of gravity in a two-dimensional domain are still limited. This research aims to numerically analyze the behavior of metric perturbations and space-time curvature in the framework of linear general relativity and verify its consistency with gravitational wave theory and Newtonian gravity at weak field and low velocity limits. The study is limited to a linearized approach, two-dimensional flat spacetime, harmonic and transverse–traceless gauge conditions, and ideal sources in the form of Gaussian perturbations and source-free waves. The methods used include the theoretical formulation of linearized general relativity and the Finite Difference Method (FDM) numerical approach to discretize the Laplace operator and wave equation with the FTCS scheme. The results show that Gaussian perturbations produce highly localized curvature with a global Ricci tensor contribution approaching zero. Gravitational wave simulations show the dominance of energy in polarization (h_+)\ over (h_\times), as well as numerical verification of the relationship (h_{00}=-2\phi), which confirms the reduction of general relativity to Newton's laws. This research fills a research gap by integrating metric analysis, curvature, and gravitational waves into a single consistent numerical framework. The novelty of this research lies in Gaussian modeling and integrated FDM-based numerical analysis as a conceptual bridge between general relativity and classical mechanics.

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