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All Journal JURNAL PENGABDIAN KEPADA MASYARAKAT International Journal of Science and Applied Science: Conference Series Lantanida Journal Jurnal Pendidikan Kimia (JPKim) Jurnal Pensil : Pendidikan Teknik Sipil Indonesian Journal of Chemical Science and Technology Hydrogen: Jurnal Kependidikan Kimia Jurnal Ilmiah Wahana Pendidikan Jurnal Nasional Holistic Science CHEDS: Journal of Chemistry, Education, and Science Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Jurnal Multidisiplin Teknologi dan Arsitektur Jurnal Riset Rumpun Ilmu Pendidikan (JURRIPEN) Journal of The Indonesian Society of Integrated Chemistry SAKOLA: Journal of Sains Cooperative Learning and Law
Dimas Ridho
Universitas Negeri Medan
Religion Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Nursing Physics Social Sciences Other

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THE IMPACT OF DISCOVERY LEARNING ON HIGHER-ORDER THINKING SKILLS IN CHEMISTRY: A META-ANALYSIS Ardila, Mutia; Samosir, Rafidah Almira; Pratiwi, Alfira Julian; Kurniawan, Ekin Dwi Arif; Ridho, Dimas; Sa’diyah, Halimatus
Lantanida Journal Vol 13 No 1 (2025): January-June 2025
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v13i1.29914

Abstract

This research examines the effect of the discovery learning model on higher-order thinking skills in chemistry subjects at the high school level in Indonesia with a total sample of 230 students. The research method is a meta-analysis study with a range of research data from 2015-2024 based on Google Scholar indexed by Sinta. Heterogeneity test analysis using JASP version 0.8.5 shows a τ² value of 0.236 and a τ value of 0.485, with an I² value approaching 100% (CI: 74.015%–98.358%). The results indicate a high level of heterogeneity (98.358%). Therefore, a random effects model is used in the analysis. The meta-analysis results suggest that discovery learning significantly affects higher-order thinking skills (z = 4.730; p < 0.001; 95% CI). Funnel plot and Egger's tests did not show publication bias, supported by a fail-safe N value 488. The results of this study reinforce empirical evidence that discovery learning is a practical approach to chemistry learning.
Analisis Pemahaman Siswa Terhadap Struktur Atom dan Sistem Periodik Unsur Dalam Konteks Minat Belajar: Pendekatan Kuantitatif Panggabean, Freddy Tua Musa; Ridho, Dimas; Dewita, Cinta Febby; Wahyuni, Indri; Sari, Marta; Izwani, Putri Khairi
SAKOLA: Journal of Sains Cooperative Learning and Law Vol 2, No 1 (2025): April 2025
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/sakola.v2i1.5910

Abstract

Penelitian ini bertujuan untuk menganalisis pemahaman siswa terhadap materi struktur atom dan sistem periodik unsur serta hubungannya dengan minat belajar siswa. Pendekatan yang digunakan adalah kuantitatif deskriptif dengan populasi siswa kelas X di salah satu SMA negeri. Sampel penelitian terdiri dari 100 siswa yang dipilih secara purposive. Instrumen yang digunakan meliputi tes objektif untuk mengukur pemahaman konsep dan angket minat belajar siswa. Data yang diperoleh dianalisis menggunakan statistik deskriptif berupa persentase, rata-rata, dan standar deviasi, serta uji korelasi Pearson untuk melihat hubungan antara minat belajar dengan tingkat pemahaman siswa. Hasil penelitian menunjukkan bahwa sebagian besar siswa memiliki tingkat pemahaman sedang terhadap struktur atom dan sistem periodik unsur. Selain itu, ditemukan adanya hubungan positif yang signifikan antara minat belajar dengan pemahaman siswa. Semakin tinggi minat belajar siswa, semakin baik pula pemahamannya terhadap materi. Temuan ini menunjukkan pentingnya pengembangan strategi pembelajaran yang tidak hanya fokus pada penguasaan konsep, tetapi juga mampu meningkatkan minat belajar siswa agar tercapai hasil belajar yang optimal dalam pembelajaran kimia.
Development of An Interactive E-Module Based on Green Chemistry on Reaction Rate Matter Rahmani, Mei; Pulungan, Ahmad Nasir; Ridho, Dimas; Kurniawan, Ekin Dwi Arif
Journal of The Indonesian Society of Integrated Chemistry Vol. 17 No. 1 (2025): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v17i1.41109

Abstract

This study aims to develop an interactive e-module based on green chemistry in the reaction rate material to improve learning outcomes and foster students' interest in learning. The research employed the Research and Development (R&D) method using the 4D development model (Define, Design, Develop, Disseminate), which in this study was limited to the Develop stage. The research subjects consisted of 2 lecturers, 1 chemistry teacher, and 32 students from from the Grade XI Science A-1 class at State Islamic Senior High School 1 Medan (MAN 1 Medan), selected through purposive sampling. The research instruments included test instruments (pretest and posttest questions) and non-test instruments (validation questionnaires and student learning interest questionnaires). Based on expert validation, the interactive e-module was declared highly feasible with an overall average score of 82.00%. In the trial phase, the e-module showed an improvement in student learning outcomes with an N-gain score of 0.69, categorized as moderate, and student interest in learning reached 74%, also falling into the moderate category. Keyword:        Interactive e-module, green chemistry, reaction rate, learning outcomes, learning interest.
PENERAPAN TEKNOLOGI MESIN PENCAMPUR PAKAN TERNAK RUMINANSIA UNTUK MENINGKATKAN KUALITAS SUSU KAMBING PERAH DALAM UPAYA PENCEGAHAN STUNTING DI DESA PASAR BARU KECAMATAN TELUK MENGKUDU KABUPATEN SERDANG BERDAGAI Damanik, Marini; Koto, Indra; Pratiwi, Alfira Julian; Sari, Sri Adelila; Ridho, Dimas; Riris, Ida Duma; Dewi, Ratna Sari; Kurniawan, Ekin Dwi Arif
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol. 31 No. 3 (2025): JULI-SEPTEMBER
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkm.v31i3.67759

Abstract

Peningkatan kualitas pakan ternak ruminansia menjadi salah satu faktor penting dalam mendukung produktivitas susu kambing perah, yang secara tidak langsung berkontribusi dalam dunia kesehatan sebagai upaya pencegahan stunting melalui pemenuhan gizi keluarga. Namun, mitra peternak di Desa Pasar Baru, Kecamatan Teluk Mengkudu, Kabupaten Serdang Bedagai masih menghadapi kendala dalam proses pencampuran pakan secara manual yang memakan waktu lama dan menghasilkan pakan yang tidak homogen. Kegiatan pengabdian ini bertujuan untuk memberikan solusi melalui penerapan teknologi tepat guna berupa mesin pencampur pakan serta pelatihan manajemen usaha. Metode yang digunakan meliputi pendidikan, pelatihan, dan praktik langsung. Hasil kegiatan menunjukkan bahwa mitra mengalami peningkatan efisiensi kerja, dengan waktu pencampuran pakan yang berkurang signifikan, serta peningkatan homogenitas pakan yang berdampak positif terhadap kualitas dan kuantitas susu kambing. Selain itu, pelatihan pengemasan dan pemasaran turut mendukung penguatan aspek kewirausahaan mitra. Kegiatan ini memberikan dampak nyata dan berkelanjutan dalam peningkatan produktivitas ternak serta ekonomi rumah tangga peternak.
Pengaruh Model Pembelajaran Student Centered Learning (SCL) Terhadap Miskonsepsi Kimia Unsur Menggunakan Metode Certainty Of Response Index (CRI) Dengan Model Two-Tier Test Pada Mahasiswa Pendidikan Kimia Ridho, Dimas; Panggabean, Freddy Tua Musa; Gea, Olivia Febriana; Panjaitan, Khayla Akmal; Daeli, Dinastini; Nadira, Fathin
Jurnal Ilmiah Wahana Pendidikan Vol 11 No 10.C (2025): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

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

Abstract

Penelitian ini bertujuan untuk menganalisis hubungan penerapan Student Centered Learning (SCL) menggunakan metode Certainty of Response Index (CRI) model Two-Tier, yang melibatkan soal dan tingkat keyakinan mahasiswa terhadap pemahaman materi Kimia Unsur. Penelitian dilakukan pada delapan submateri, yaitu golongan IA (6%), golongan IIA (9%), golongan VIIA (13%), golongan VIIIA (13%), unsur periode 3 (16%), unsur periode 4 (6%), ion kompleks (9%), dan senyawa kompleks (19%). Hasil menunjukkan bahwa senyawa kompleks memiliki tingkat miskonsepsi tertinggi, sedangkan golongan IA dan unsur periode 4 terendah. Pendekatan SCL terbukti efektif dalam meningkatkan pemahaman konsep dasar, tetapi diperlukan strategi pembelajaran tambahan untuk mengurangi miskonsepsi pada submateri tertentu, sehingga kualitas pembelajaran kimia unsur dapat ditingkatkan secara menyeluruh
Analisis Pemahaman Kognitif Mahasiswa terhadap Materi Stoikiometri melalui Soal Pilihan Ganda: Kajian pada Mahasiswa Pendidikan Kimia Panggabean, Freddy Tua Musa; Ridho, Dimas; Pratama, Muhammad Rizky; Simanullang, Selafionita; Damanik, Kezia May Kristy Br; Azriany, Dianra
SAKOLA: Journal of Sains Cooperative Learning and Law Vol 2, No 2 (2025): Oktober 2025
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/sakola.v2i2.6029

Abstract

Penelitian ini bertujuan untuk menganalisis tingkat pemahaman kognitif mahasiswa Pendidikan Kimia terhadap materi stoikiometri melalui pengerjaan soal pilihan ganda. Materi stoikiometri dipilih karena menuntut penguasaan konseptual sekaligus keterampilan numerik dalam menyelesaikan persoalan kuantitatif kimia. Penelitian menggunakan pendekatan deskriptif kuantitatif dengan sampel sebanyak 20 mahasiswa dan instrumen berupa 10 soal pilihan ganda yang menguji berbagai aspek penting seperti hukum dasar kimia, konsep mol, identifikasi reaktan pembatas, dan perhitungan rendemen reaksi. Hasil penelitian menunjukkan bahwa skor rata-rata yang diperoleh mahasiswa adalah 6,3 dari 10, dengan variasi tingkat penguasaan antar individu. Lima soal dikategorikan mudah, tiga soal sedang, dan dua soal tergolong sulit. Selain itu, analisis korelasi menunjukkan adanya keterkaitan antar soal yang mengukur konsep serupa, sekaligus mengungkap beberapa soal yang perlu direvisi karena rendahnya daya beda. Penelitian ini merekomendasikan pengembangan pembelajaran kontekstual dan asesmen formatif berbasis analisis data untuk meningkatkan kualitas pemahaman stoikiometri mahasiswa.
Penguatan Kompetensi Praktis Mahasiswa Pendidikan Biologi melalui Pelatihan Pembuatan Filter Air Sederhana Dimas Ridho; Ratna Sari Dewi; Lenni Khotimah Harahap; Aldo Geo Frengky Saragih; Anggun Maharani; Delima Sianturi; Elsa Elperida Pandiangan; Monalisa Situmorang; Mei Sufi Anisa Sibarani; Wiranda Hasibuan
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 3 (2025): Desember : JURRIMIPA: Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i3.6849

Abstract

Clean water is a fundamental necessity; however, many regions still struggle to access it due to contamination by suspended particles, organic matter, and harmful microorganisms. This activity aims to strengthen the practical competence of Biology Education students at Universitas Negeri Medan through training in making simple water filters. The training was conducted through demonstrations and simulations using turbid water from the Tembung River as a sample. The filter was constructed from readily available materials such as used plastic bottles, cotton, tissue, sand, small gravel, and palm fiber arranged in layers. The results showed that the filter effectively reduced water turbidity and enhanced students’ skills in clean water treatment technology. The training also encouraged students to develop 21st-century skills such as critical thinking, problem-solving, and collaboration, while preparing them as future educators capable of raising community awareness about the importance of maintaining water quality. Therefore, this training has the potential to be developed as an applicative environmental education model that contributes positively to clean water provision.
Perspektif Mahasiswa Matematika tentang Pencampuran Ekstrak Lidah Buaya (Aloe Vera) dengan Larutan Asam Lemah terhadap Kesehatan dan Kelembutan Rambut Dimas Ridho; Tita Juwitaningsih; Syifani Azzura; Annisa Saktiono; Agnia Kamila Rambe; Jona Mikhael Hutagaol; Lutfiah Syahrawani Siregar
JURNAL RISET RUMPUN ILMU PENDIDIKAN Vol. 4 No. 1 (2025): April : Jurnal Riset Rumpun Ilmu Pendidikan
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurripen.v4i1.4871

Abstract

This study aims to analyze the perspectives of mathematics students on mixing aloe vera extract with weak acid solution for hair health and softness. The research method used is descriptive quantitative through the distribution of questionnaires to 43 mathematics students at Medan State University and other universities in North Sumatra. The questionnaire consists of 19 statements covering aspects of knowledge (12 items), environmental awareness (4 items), and psychomotor (4 items) with a Likert scale of 1-5. The results showed that the majority of respondents had good knowledge about the benefits of aloe vera for hair care (mean = 4.02), but the understanding of weak acid solution and its mechanism of action was still moderate (mean = 3.12). The environmental awareness aspect showed a high value (mean = 3.76) which reflects the tendency of students to choose natural products. Meanwhile, the psychomotor aspect showed a moderate value (mean = 3.44), which indicates the limitations of respondents' skills in applying hair care products optimally. This study found a positive correlation between knowledge about natural ingredients and the tendency to use natural-based products for hair care. The results of this study are expected to be the basis for developing hair care product formulations based on natural ingredients that suit the needs and preferences of students.
Analysis of Enthalpy Changes in Jackfruit Seed (Artocarpus heterophyllus L.) Fermentation Process Based on Yeast Mass Dimas Ridho; Moondra Zubir; Ani Sutiani; Amanda Revalona Sitepu; Dita Indah Lorencia Silitonga; Maria Yovinta Silitonga; Muhammad Fisal
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 1 (2025): JANUARY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i1.68658

Abstract

This study investigates the fermentation process of jackfruit seeds (Artocarpus heterophyllus L.) as a bioethanol production source due to their high carbohydrate content. The research focuses on the effect of yeast mass on temperature fluctuations and reaction enthalpy (ΔH) during fermentation. Jackfruit seed flour was prepared and hydrolyzed with 5M HCl before fermentation with varying yeast masses. Temperature changes during fermentation ranged from 28.5°C to 32°C, depending on yeast mass, indicating the activity of Saccharomyces cerevisiae. The reaction enthalpy values for the samples were -126 J, -168 J, -504 J, and -1008 J, confirming the exothermic nature of the fermentation process
Integrating Virtual Laboratories in Chemistry Education: Vocational Students’ Responses to Cation Qualitative Analysis Samosir, Rafidah Almira; Ardila, Mutia; Pratiwi, Alfira Julian; Kurniawan, Ekin Dwi Arif; Ridho, Dimas
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 2 (2025): April 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i2.15432

Abstract

Research on student responses and the challenges of implementing virtual laboratories in qualitative cation analysis practicums within vocational pharmacy education remains limited. This study aims to explore student responses to the use of virtual laboratories as an alternative learning tool and to identify the challenges faced during its implementation. A qualitative approach with a case study method was employed. Data were collected through questionnaires and classroom observations during the learning process. The participants were 41 Grade XII students of the Pharmacy Program at SMK Galang Insan Mandiri Binjai, who engaged in virtual laboratory-based learning for qualitative cation analysis. The results indicate that virtual laboratories enhance student engagement and comprehension of the subject matter. Students responded positively to the use of virtual labs, reporting increased motivation and interest in developing technology-related skills. However, challenges such as limited digital literacy and infrastructure issues were also identified. The study suggests that virtual laboratories should be complemented with hands-on practicum sessions to provide a balanced and realistic learning experience. These findings offer valuable insights into the potential and limitations of virtual laboratory implementation in vocational pharmacy education.
Co-Authors Agnia Kamila Rambe Ahmad Nasir Pulungan Ahmad Nurkholis Majid Aldo Geo Frengky Saragih Alisya, Syalwa Nur Amanda Revalona Sitepu Anggun Maharani Ani Sutiani Annisa Fadillah Annisa Saktiono Ardila, Mutia Atika, Liana Azriany, Dianra Azzahra, Nazwa Br. Hutahuruk, Novitasari Christy Chirona Veronika Daeli, Dinastini Damanik, Kezia May Kristy Br Damanik, Marini Delima Sianturi Dewita, Cinta Febby Dita Indah Lorencia Silitonga Elsa Elperida Pandiangan Fitrah Ifandi Hasibuan Freddy Tua Musa Panggabean Gea, Olivia Febriana Gurning, Mita Agresia Happy Glory Maritoma Hutagalung, Tien Parsaulian Ida Duma Riris Iis Siti Jahro Indra Koto Indri Wahyuni Izwani, Putri Khairi Jona Mikhael Hutagaol Juwitaningsih, Tita Kurniawan, Ekin Dwi Arif Lenni Khotimah harahap Lukman, Mena Fadilla Lutfiah Syahrawani Siregar Maria Yovinta Silitonga Mei Sufi Anisa Sibarani Meidiana Nur Budi Prastiwi Monalisa Situmorang Moondra Zubir Muhammad Fisal Mutia Ardila Nabila Mutiara Syifa Nadhira Eka Putri Prayudi Nadira, Fathin Ni Putu Laksmi Cintya Dewi Ningsi, Rira Octa Nur, M Rosyadi Izzuddin Panjaitan, Khayla Akmal Pratama, Muhammad Rizky Pratiwi, Alfira Julian Putra, Riansyah Putri Syahbilah Rahmani, Mei Ratna Sari Dewi SAFRINANDA HARAHAP Samosir, Rafidah Almira SARI, MARTA Sa’diyah, Halimatus Sianipar, Mirna Wulan Sari Sihombing, Cindy Monalisa Simanullang, Selafionita Siti Zahara Sri Adelila Sari Syafiatun Siregar Syifani Azzura Tafonao, Firman Satria Tita Juwitaningsih Wiranda Hasibuan Zhilli Izzadati Khairuni