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All Journal CHEMISTRY PROGRESS JURNAL ILMU PERTANIAN Edumatsains JURNAL PENDIDIKAN TAMBUSAI Jurnal Pendidikan Fisika dan Teknologi Jurnal Pendidikan dan Konseling JIIP (Jurnal Ilmiah Ilmu Pendidikan) JURNAL PENDIDIKAN, SAINS DAN TEKNOLOGI Jurnal Visi Eksakta Jurnal Ilmiah Wahana Pendidikan Jurnal Pengabdian kepada Masyarakat Jurnal Kajian Ilmu Pendidikan (JKIP) Innovative: Journal Of Social Science Research PKM Maju UDA Charm Sains : Jurnal Pendidikan Fisika Jurnal Pengabdian Multidisiplin Indonesia
Mariana Br. Surbakti
Universitas HKBP Nommensen Medan
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Other

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PENGEMBANGAN MODUL PEMBELAJARAN FISIKA TERINTEGRASI KEARIFAN LOKAL TAGANING UNTUK KETERAMPILAN KONSEPTUAL GELOMBANG MEKANIK Purba, Bulus Tua M.; Marbun, Juliaster; Sinaga, Goldberd Harmuda Duva; Surbakti, Mariana; Sitorus, Parlindungan
Charm Sains: Jurnal Pendidikan Fisika Vol 6 No 3 (2025): OKTOBER
Publisher : Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado

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Abstract

Conceptual skills in physics are an essential foundation for students to understand natural phenomena deeply and analytically, yet conventional teaching often fails to connect abstract theory with real-life contexts. This study aims to develop a physics learning module integrated with the local wisdom of the Toba Batak Taganing on mechanical wave material to enhance students' conceptual skills. The developed module links concepts of waves, resonance, and interference with the acoustic principles of the Taganing musical instrument through a Problem-Based Learning approach. Expert validation results demonstrated a high level of feasibility, with details of 78% (Feasible category) by subject matter experts, 85% (Highly Feasible) by cultural experts, and 97% (Highly Feasible) by language experts. A limited trial with grade XI students showed an improvement in conceptual skills, specifically an abstraction ability of 71% (Good) and systematic thinking of 72% (Good). Teacher and student responses to the module were very positive, with a practicality level of 81%, indicating that the module is not only easy to use but also contextual and engaging. These findings confirm that integrating local wisdom into ethnoscience-based physics learning design is not only effective in strengthening students' conceptual understanding but also plays a strategic role in preserving cultural heritage and fostering learning engagement.
Pengaruh Model Pembelajaran Inkuiri Terbimbing Berbantuan Kahoot Untuk Meningkatkan Hasil Belajar Peserta Didik SMA Pada Materi Energi Terbarukan Harianja, Eliza Crystiani; Nainggolan, Juliper; Surbakti, Mariana
Jurnal Kajian Ilmu Pendidikan (JKIP) Vol. 6 No. 4 (2025): Jurnal Kajian Ilmu Pendidikan (JKIP)
Publisher : Lembaga Riset dan Inovasi Almatani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55583/jkip.v6i4.1638

Abstract

This research aims to determine the effect of the Kahoot-assisted guided inquiry model to improve high school students' learning outcomes in class X renewable energy material at SMA Parulian 2 Medan. The method used is quasi-experimental with a nonequivalent control group design. Sampling was carried out using purposive sampling technique. The research samples for experimental class X-B and control class X-A each consisted of 28 students. The instrument used is a learning outcomes test, multiple choice with 20 questions. Before being given treatment, a prerequisite test must be carried out to determine whether the sample comes from a population that is normally distributed and homogeneous. Furthermore, the pretest was given to the experimental and control classes with average scores of 52.85 and 51.78 respectively with standard deviations of 16.36 and 13.69. After being given treatment in the experimental and control classes, by giving a posttest an average score of 65.53 and 66.42 was obtained with a standard deviation of 12.57 and 10.35. To determine the differences between the two classes, a one-sided t-test was carried out with α=0.05, it was found that t-hitung > t-tabel, which indicated that there was a significant difference in science process skills in Newton's law material.
IMPLEMENTASI IoT DAN SENSOR MULTIFUNGSI DALAM PRAKTIKUM INDUKSI ELEKTROMAGNETIK Nainggolan, Juliper; Marbun, Juliaster; Surbakti, Mariana; Pardede, Juven
Charm Sains: Jurnal Pendidikan Fisika Vol 6 No 3 (2025): OKTOBER
Publisher : Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado

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Abstract

This study aims to implement an Internet of Things (IoT) and multifunctional sensor system in the electromagnetic induction practicum to enhance students’ conceptual understanding and analytical skills. The research employed a quasi-experimental design with pre-test and post-test models involving 26 students enrolled in the Physics Laboratory Design and Production course. The practicum utilized real-time data acquisition, allowing students to directly observe relationships among magnetic flux variations, induced electromotive force (EMF), and current direction through a digital interface. Results revealed a significant increase in students’ conceptual understanding, with mean scores rising from 59.8% to 81.6% (p < 0.001). Moreover, 84.7% of participants achieved Good to Very Good understanding levels. Questionnaire data indicated high levels of motivation and satisfaction with the IoT integration, particularly regarding interactivity, rapid data analysis, and real-time visualization of physical phenomena. The implementation of IoT and multifunction sensors effectively improved the quality of physics laboratory learning, strengthened analytical thinking skills, and fostered contextual, technology-oriented learning experiences relevant to modern scientific education.
Antimicrobial Activity Test of Alkaloid Rich Extract from Morinda citrifolia Leaves Against the Growth of Pathogenic Bacteria Staphylococcus aureus and Escherichia coli Josafat Alexander, Irving; Surbakti, Mariana; Sirait, Gloria; Silaban, Ramlan
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.8043

Abstract

This study aims to analyze the antimicrobial activity of alkaloid compounds from noni leaf extract (Morinda citrifolia) against the growth of pathogenic bacteria Staphylococcus aureus and Escherichia coli. The study applied a quantitative experimental laboratory approach. Extraction was carried out using the maceration method with 96% ethanol, followed by qualitative phytochemical analysis using Mayer, Dragendorff, and Wagner reagents to identify the presence of alkaloids. Using the Kirby-Bauer disk diffusion method, the antibacterial efficacy was evaluated at concentrations of 25%, 50%, 75%, and 100%. The primary indicator utilized was the size of the regions where bacteria could not thrive. Basic statistics and ANOVA analyses were utilized for data assessment. About 10.45% of alkaloids were found in the results. As the extract concentration grew, the quantity of bacterial development arrested did as well. The most notable impact was observed at the 100% concentration, with no growth zones of 18.9 mm for S. aureus and 15.8 mm for E. coli. The extract was more effective against Gram-positive bacteria. With p values less than 0.05, the statistical analysis found significant variations among the various treatments. Finally, the alkaloids found in noni leaves have a lot of potential to work as natural antibacterial agents and could be a substitute to fight antibiotic resistance.
Analysis of Students’ Scientific Reasoning Profiles Using the Lawson’s Classroom Test of Scientific Reasoning Pardede, Hebron; Surbakti, Mariana; Silaban, Bajongga
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 12 No 1 (2026): January-June (In Press)
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v12i1.10680

Abstract

This study investigates the scientific reasoning profiles of physics education students using Lawson’s Classroom Test of Scientific Reasoning (LCTSR). A descriptive quantitative design was employed with 50 undergraduate students from the Physics Education Study Program at Universitas HKBP Nommensen, Indonesia. The LCTSR instrument consists of 30 paired multiple-choice items assessing six dimensions of scientific reasoning: conservation reasoning, proportional reasoning, control of variables, probabilistic reasoning, correlational reasoning, and hypothetico-deductive reasoning. The results show that the mean LCTSR score was 12.4 out of 30, indicating that most students were at the transitional reasoning level. Specifically, 30% of students were classified as concrete reasoners, 56% as transitional reasoners, and only 14% as formal reasoners. Among the six reasoning aspects, conservation reasoning demonstrated the highest achievement (77.5%), whereas hypothetico-deductive reasoning was the weakest (16.7%). The findings indicate substantial difficulties in abstract reasoning processes. These results highlight the need for explicit instructional strategies to promote higher-order scientific reasoning in physics education programs.
Co-Authors Ade Maremare Agusmanto J.B. Hutauruk Angelin Sihombing Bajongga Silaban, Bajongga Batu, Eka D. Lumban Breti A. Sembiring Charolin Tampubolon Cindy Enjelina Purba Dapot Tua Manullang Desiana Purba Dewi Paulina Silalahi Eka Notasya Simanullang Elda Sihaloho Elma Sitompul Esra Sianturi Friska Tulus Fitri Ani Nababan Giawa, Budisman Gloria Sirait Goldbert Harmuda Duva Sinaga Harianja, Eliza Crystiani Hersakso Sinurat Indah Septa Ayu Laia Irving Josafat Alexander Jelita Karo Sekali Juliper Nainggolan juliper nainggolan Julius Pontoh Laia, Indah Septa. A. Lukman Pardede Manullang, Erlin Juniati Manullang, Romauli Marbun, Juliaster Marpaung, Serifina Mayz Papilaya Nainggolan, Irawati Kristin M. nainggolan, juliper Nova Uli Simbolon Pane, Januari Panjaitan, Poltak Pardede, Dewi Lestari Pardede, Hebron Pardede, Juven Parlindungan Sitorus Pasaribu, Ibram Purba, Bulus Tua M. Ramlan Silaban Riossally Marselina Tumanggor Samuel Juliardi Sinaga Sanita Saragih Sarah Tarigan Silaban, Winda M. Simamora, Suhendra SITINJAK, ERNI KUSRINI Sitorus, Arjo Saputra Situmorang, Hot Ria Surya Darma Pardede Tamba, Auwy Warsidah, Warsidah Wasta Elviat Zega