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All Journal JURNAL PENGABDIAN KEPADA MASYARAKAT Lantanida Journal Indonesian Journal of Chemical Science and Technology Hydrogen: Jurnal Kependidikan Kimia Jurnal Nasional Holistic Science CHEDS: Journal of Chemistry, Education, and Science JIPI (Jurnal IPA dan Pembelajaran IPA)
Pratiwi, Alfira Julian
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Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Education for Sustainable Development Oriented Didactic Design in A Bioplastic Context in Overcoming Barriers to Learning and Developing Attitude and Environmental Awareness Alfira Julian Pratiwi*; Hernani Hernani; Budiman Anwar
JIPI (Jurnal IPA dan Pembelajaran IPA) Vol 7, No 1 (2023): MARCH 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v7i1.29199

Abstract

Human ignorance in conserving, managing, and protecting the environment makes plastic pollution a real problem for the world's health and environment. Therefore, this study aims to develop environmental attitudes and awareness as well as mastery of pre-service teachers’ concepts through ESD-oriented didactic design in the context of bioplastics. This study used a Didactical Design Research (DDR) with 27 pre-service teachers. The instruments used in this study were tests, questionnaires, validation sheets, and transcripts. Based on the results of the analysis, it was found that there are attitudes and awareness of pre-service teachers that need to be developed, the results of preconception data analysis of pre-service teachers experienced learning barriers in content (1) classification of biodegradable biopolymers (2) starch decomposition process (3) benefits of biopolymers in various fields (4) and the environment (5) bioplastic dilemma (6) function of materials in the manufacture of bioplastics. The validation results indicate that improvements are needed in the learning objectives and some improvements in sentence redaction in didactic situations. After the learning was applied, it was found that most of the responses that emerged from the pre-service teacher were in accordance with what was designed by the educator, and after the percentage analysis was carried out there was a development of attitudes and awareness and mastery of concepts of the pre-service teacher.
Analysis of Students' Initial Ability in Biopolymer Material Pratiwi, Alfira Julian; Kurniawan, Ekin Dwi Arif; Ridho, Dimas
Holistic Science Vol. 4 No. 3 (2024): Jurnal Nasional Holistic Science
Publisher : Lembaga Riset Mutiara Akbar NOMOR AHU-0003295.AH.01.07 TAHUN 2021

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/hs.v4i3.782

Abstract

This study aims to identify students' initial abilities in biopolymer materials as a basis for developing learning designs. This study uses a content analysis method, with participants being fourth-semester students in one of the Chemistry Education study programs, at a state university in West Java. The instrument used in this study was a descriptive test consisting of 13 questions. The results of the Initial ability data analysis showed that overall, it was identified that 41% of students had an Initial ability understanding with a sufficient category, 33% of students had a poor category, 23% of students had a good category and 3% of students had an initial ability understanding with an outstanding category. Based on these findings, several interventions are suitable as references in developing didactic designs, such as displaying learning videos related to the manufacture of simple bioplastics, graphs of development and annual production costs of bioplastics, images of bioplastic applications in various fields, and infographics related to the decomposition process and the benefits of sustainability of bioplastics.
Analysis of Student Satisfaction with the Digital System for Using the Chemistry Department Room at State University of Medan Ridho, Dimas; Pratiwi, Alfira Julian; Kurniawan, Ekin Dwi Arif; Ardila, Mutia; Samosir, Rafidah Almira; Nur, M Rosyadi Izzuddin
Holistic Science Vol. 4 No. 3 (2024): Jurnal Nasional Holistic Science
Publisher : Lembaga Riset Mutiara Akbar NOMOR AHU-0003295.AH.01.07 TAHUN 2021

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/hs.v4i3.786

Abstract

This study aims to determine student satisfaction with the digital system of room usage at the Chemistry Department, State University of Medan. The research method used is descriptive qualitative. The results of the study conducted on 25 students showed that in the aspect of recording room usage, there was an increase in satisfaction of 7.7%, in the aspect of room usage recapitulation, there was an increase in satisfaction to very good with a percentage of 53.8%, in the aspect of viewing room availability, there was an increase in satisfaction to very good with a percentage of 46.2%, in the aspect of viewing lecturers' schedules, there was an increase in satisfaction to very good with a percentage of 53.8%. Based on the results of the study, it shows that the response to satisfaction with the digital system shows an increase in satisfaction to improve the quality of room usage at the Chemistry Department, State University of Medan.
PENGEMBANGAN PENUNTUN PRAKTIKUM KIMIA RAMAH LINGKUNGAN BERBASIS INKUIRI TERBIMBING; TAHAP DEVELOPMENT MODEL ADDIE Kurniawan, Ekin Dwi Arif; Pratiwi, Alfira Julian; Ridho, Dimas; Ardila, Mutia; Samosir, Rafidah Almira
CHEDS: Journal of Chemistry, Education, and Science Vol 9, No 1 (2025)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v9i1.11071

Abstract

Kurangnya fasilitas laboratorium yang memadai dan panduan praktikum berkualitas rendah di banyak sekolah menengah atas menghambat pembelajaran praktikum kimia yang efektif. Untuk mengatasi hal ini, penelitian ini mengembangkan dan mengevaluasi panduan praktikum kimia berbasis penyelidikan terbimbing yang terintegrasi dengan prinsip-prinsip kimia hijau, menggunakan model ADDIE (berfokus pada tahap pengembangan). Validasi dilakukan oleh enam guru kimia dan dua dosen, menilai aspek-aspek seperti konten, bahasa, penyajian, dan desain. Metode kuantitatif deskriptif dalam kerangka RD digunakan untuk analisis. Panduan tersebut menerima skor rata-rata keseluruhan sebesar 4,78 dari 5, yang menunjukkan bahwa panduan tersebut "sangat layak." Secara khusus, skor untuk konten, bahasa, penyajian, dan desain masing-masing adalah 4,78, 4,82, 4,78, dan 4,75. Hasil-hasil ini menunjukkan bahwa panduan tersebut sesuai untuk meningkatkan pembelajaran kimia praktis dan menumbuhkan kesadaran lingkungan melalui kimia hijau di sekolah menengah atas.
LEMBAR KERJA MAHASISWA (LKM) BERBASIS EDUCATION SUSTAINABLE DEVELOPMENT (ESD) PADA MATERI BIOPOLIMER Pratiwi, Alfira Julian; Ardila, Mutia; Samosir, Rafidah Almira; Arif Kurniawan, Ekin Dwi; Ridho, Dimas; Ningsi, Rira Octa
CHEDS: Journal of Chemistry, Education, and Science Vol 9, No 1 (2025)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v9i1.11060

Abstract

Penelitian ini bertujuan untuk merancang lembar kerja mahasiswa (LKM) berbasis Pendidikan Pembangunan Berkelanjutan (ESD) pada bahan biopolimer. Lembar kerja ini diharapkan dapat digunakan dalam penelitian lebih lanjut dan membantu mahasiswa memahami pentingnya pembangunan berkelanjutan melalui topik biopolimer sebagai solusi permasalahan lingkungan. Metode yang digunakan adalah pendekatan kualitatif dengan teknik pengumpulan data melalui Focus Group Discussion (FGD). FGD dilakukan pada tahap pra-penelitian untuk mendapatkan masukan awal dan menyiapkan desain LKM yang sesuai. Hasil penelitian menunjukkan bahwa lembar kerja yang dikembangkan dinilai layak setelah mengalami revisi berdasarkan masukan dari para ahli di bidang material, desain, dan pedagogi. Oleh karena itu, produk akhir dinyatakan valid dan direkomendasikan untuk diuji dalam pembelajaran biopolimer di tingkat universitas.
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.
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.
The Effect of Acids, Bases and Salts in Removing Rust Using the Electrolysis Method Kurniawan, Ekin Dwi Arif; Moondra Zubir; Alfira Julian Pratiwi; Rafidah Almira Samosir; Mutia Ardila; Agnes Aprilyani Br Silitonga; Anna Sakila; Dindy Louiza Pangaribuan; Geby Mai Irawan; Okta Miranda Samosir; Vivy Cintia Laudia Hutagaol
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 2 (2025): JULY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i2.68718

Abstract

Corrosion is a natural process of metal deterioration caused by chemical or electrochemical reactions with the surrounding environment, and it commonly occurs in iron and steel. This study examined the use of electrolysis as a simple method to reduce rust on iron surfaces by applying several electrolyte solutions. The solutions tested included sodium chloride, citric acid, acetic acid, sodium bicarbonate, and water, each at a concentration of 10%, while citric acid was also varied up to 100%. Electrolysis was performed for 10 to 30 minutes on both positive and negative poles. The findings showed that sodium chloride solution gave the highest effectiveness in rust removal, with 0.93% rust loss on the negative pole and 0.58% on the positive pole. Increasing solution concentration and treatment time further improved the rust removal rate, reaching 2.50% at 30 minutes.
Effect of Sugar, Salt, and Flavorings Addition on Temperature Changes and Specific Heat Capacity in Citric Acid, Acetic Acid, and Ascorbic Acid Solutions Alfira Julian Pratiwi; Ekin Dwi Arif Kurniawan; Rafidah Almira Samosir; Mutia Ardila; Gioni Thesia Boru Simbolon; Afrilia Tria Ivanka; Muhammad Fadhli; Tetra Tasya Anggraini Butar; Eren Nazura; Moondra Zubir; Abd Hakim S
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 2 (2025): JULY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i2.68735

Abstract

This study aims to evaluate the effect of the addition of additives in the form of sugar, salt, and flavorings on changes in temperature and type heat capacity in citric acid, acetic acid, and ascorbic acid solutions. The methodology used is a quantitative experimental approach with direct observation of temperature changes as well as calculation of enthalpy changes (ΔH) in various combinations of acidic and additive solutions. The results of the analysis showed that the types of additives exerted different effects on the thermal stability and heat capacity of each acidic solution. Sugars tend to provide the most optimal thermal stability with minimal fluctuations in ΔH change, while salts cause the greatest fluctuations. Flavorings show a more varied and inconsistent pattern of change. These findings provide in-depth insights into the thermal characteristics of organic acid solutions with additive modification, contributing to the development of applications in the fields of food, pharmaceutical, and applied chemistry education.
Influence of Cooking Temperature on the Moisture Content and Organoleptic Properties of Pineapple, Banana, and Dragon Fruit Jam Mutia Ardila; Rafidah Almira Samosir; Alfira Julian Pratiwi; Ekin Dwi Arif Kurniawan; Najwa Putri L. Nasution; Gresvita Sanova Turnip; Sari Mawaddah; Faizah A. Nasution; Feri P. Jahata Samosir; Moondra Zubir; Abd Hakim S
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 2 (2025): JULY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i2.68736

Abstract

Jam is a processed fruit product with high density and acidity, making it more stable than other fruit-based products. The jam-making process includes crushing the fruit, adding sugar, acid, thickening agents, and applying heat. Cooking temperature plays a critical role in determining the moisture content, texture, aroma, and taste of jam. This study investigates the influence of cooking temperature on the moisture content and organoleptic properties of pineapple (Ananas comosus), banana (Musa paradisiaca), and dragon fruit (Hylocereus spp.) jams. The jams were prepared by heating at various temperatures (900C, 1000C, 1100C), followed by moisture content measurement and organoleptic testing. Results showed that higher temperatures significantly reduced moisture content and enhanced sensory quality. Jams cooked at 110°C had the lowest moisture levels and the best organoleptic scores. These findings highlight the importance of temperature control in producing high-quality jam.
Co-Authors Abd Hakim S Afrilia Tria Ivanka Agnes Aprilyani Br Silitonga Alisya, Syalwa Nur Anna Sakila Ardila, Mutia Br. Hutahuruk, Novitasari Budiman Anwar Damanik, Marini Dimas Ridho Dindy Louiza Pangaribuan Dira Rahma Cahya Einstenia Sirait Eren Nazura Faizah A. Nasution Feri P. Jahata Samosir Flia Arnesta Sipayung Geby Mai Irawan Gioni Thesia Boru Simbolon Gresvita Sanova Turnip HERNANI - Ida Duma Riris Indra Koto Juwitaningsih, Tita Kurniawan, Ekin Dwi Arif Moondra Zubir Muhammad Fadhli Mutia Ardila Najwa Putri L. Nasution Ningsi, Rira Octa Nove Briani Minar Sihombing Nur, M Rosyadi Izzuddin Okta Miranda Samosir Rafidah Almira Samosir Ratna Sari Dewi Samosir, Rafidah Almira Sari Mawaddah Sa’diyah, Halimatus Sianipar, Mirna Wulan Sari Sri Adelila Sari Tafonao, Firman Satria Tetra Tasya Anggraini Butar Trimutia Wulandari Vivy Cintia Laudia Hutagaol