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All Journal JURNAL EDUKASI NONFORMAL Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Indonesian Journal of Chemical Science and Technology
Rabiah Afifah Daulay
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Materials Science & Nanotechnology Social Sciences

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Teori Kajian dalam Upaya Pendekatan Peningkatan Kualitas Belajar Alam dalam Pembelajaran Biologi Anti Veronika; Lissa Herayanti; Nur Afifah Suranda; Nurhassanah Marbun; Suci Ramadhani Rangkuti; Syahro Raihan Tika Nst; Rohani Rohani; Rabiah Afifah Daulay
JURNAL EDUKASI NONFORMAL Vol 3 No 1 (2022): Jurnal Edukasi Nonformal
Publisher : Universitas Muhammadiyah Enrekang

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

Abstract

Tujuan penelitian ini adalah untuk melihat tingkat kecenderungan penelitian yang digunakan dalam pendekatan kualitas belajar alam pada pembelajaran biologi. Jenis penelitian ini adalah Systematic Literature Review. Penelitian ini berlangsung di platform digital dengan menggunakan search engine Google di dua situs yaitu Directory of Open Access Journal/DOAJ (https://doaj.org/) dan Garba Rujukan Digital/Garuda (http://garuda.ristekbrin.go.id/). Data dianalisis secara sequential explanatory dengan cara menganalisis data secara kuantitatif diikuti dengan analisis kualitatif, dengan cara menarasikan kecenderungan tujuan, metode (desain, teknik sampling, instrumen, analisis data) dan hasil penelitian. Hasil pencarian dan seleksi artikel pustaka menemukan bahwa hanya tujuh artikel yang dapat melewati tahapan penilaian kualitas. Dari ketujuh artikel pustaka tersebut, kecenderungan penelitian yang dapat ditemukan yaitu pada tujuan penelitian, artikel pustaka cenderung mengukur hasil belajar siswa (44%) sebagai tujuan yang akan diteliti. Desain penelitian yang cenderung digunakan pada artikel pustaka yaitu quasi-experimental (50%) dengan bentuk pretest-posttest design. Teknik sampling yang cenderung digunakan pada artikel pustaka yaitu purposive sampling sebanyak empat artikel pustaka. Untuk mengukur hasil belajar siswa, instrumen yang digunakan yaitu tes dalam bentuk objektif ataupun uraian sebanyak 5 artikel pustaka (42%). Analisis data yang cenderung digunakan yaitu Uji N gain sebanyak dua artikel pustaka. Serta seluruh artikel pustaka menyatakan bahwa hasil penelitian berpengaruh signifikan terhadap tujuan dari penelitian tersebut.
Influence of Ethnopedagogical Materials and Problem Based Learning on Students Learning Interest and Critical Thinking Ramlan Silaban; Grace Octavia Hutasoit; Timotius Agung Soripada; Marham Sitorus; Ida Duma Riris; Rafida Almira Samosir; Rabiah Afifah Daulay
Jurnal Inovasi Pembelajaran Kimia (Journal of Innovation in Chemistry Education) Vol. 7 No. 1 (2025): APRIL 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jipk.v7i1.67607

Abstract

The cultural wealth of Indonesia has great potential in chemistry education, but it has not been optimally utilized. Materials such as reaction rates can be contextualized through traditional processes, such as the fermentation of tuak. The lack of relevant teaching materials impacts students' low interest and critical thinking skills. Therefore, an innovation in the form of ethnopedagogy-based Student Worksheets with a Problem Based Learning model is needed to create meaningful learning. This study uses a quantitative approach with a quasi-experimental method. The instruments used consist of 5 essay questions to measure critical thinking skills and a questionnaire containing 20 statements to measure learning interest. A hypothesis test was conducted using a one-tailed Independent Sample T-Test. The results show that the average learning interest of students in the experiment class is higher compared to the control class, namely 90.25 and 85.625, respectively. Meanwhile, the average posttest score for students' critical thinking ability in the experimental class reached 92.25 higher than the control class, which scored 83.5. This shows that the use of Student Worksheet based on ethnopedagogy and Problem Based Learning has an influence on students' learning interest and critical thinking.
Natural Dye Production from Beetroot Using Vinegar and Non-Solvent : pH and Colorfastness Testing on White Fabric Rabiah Afifah Daulay; Sophia Gloria Bakara; Nailatul Fauzah Ritonga; Siti Khailafizah; Sofia Ramadhani; Suci Trianata Situmorang; 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.v8i2.68739

Abstract

Natural dyes derived from plants are increasingly attractive due to their safety and environmental friendliness. This study aimed to investigate the effect of vinegar as a natural solvent on the colorfastness of beetroot (Beta vulgaris L.) dye applied to white fabric. The research involved extracting pigments from beetroot, applying them to fabric, and testing the solution’s pH, drying time, and wash fastness. The results showed that pure beetroot extract had a pH of 5.2, while the addition of vinegar reduced the pH to 2.5–3.1. Fabric dyed with beetroot + vinegar exhibited higher initial color intensity (score 11) compared to pure beetroot (score 9), but its colorfastness dropped sharply after washing (score 4 vs. 7). Vinegar addition also prolonged fabric drying time from 12 minutes (without vinegar) to 17.5 minutes (with 20 mL vinegar). These findings indicate that vinegar enhances initial dye brightness but reduces colorfastness after washing. Nevertheless, beetroot dye remains a safer and eco-friendly alternative to synthetic dyes, although further optimization is required to improve its durability.
Fermentation Experiment of Arabica Coffee (Coffea arabica L.) from Dolok Sanggul with Variation of Gas Condition at Isothermal Temperature Rabiah Afifah Daulay; Moondra Zubir; Ani Sutiani; Jenny Lasria Florita Br.Tampubolon; Winda Silalahi; Amelia Rahmadhani; Muhammad Ali Athiya Zahran; Lisna Sevta Siburian
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.v8i1.68662

Abstract

Indonesia is one of the largest coffee producing and exporting countries in the world. One of the types of coffee that is famous in Indonesia is arabica coffee. This study examines the impact of different gas environments (open, semi-closed, and closed) on the fermentation process of Arabica coffee beans (Coffea arabica L.) at various temperatures (40°C, 60°C, and 80°C). The key factors analyzed were the moisture content and pH levels of the beans after fermentation and roasting. The findings revealed that both gas environment and temperature had a significant effect on the moisture content and pH of the beans, with higher temperatures (80°C) leading to a faster reduction in moisture. Additionally, the pH level was higher under open gas conditions. This research offers valuable information on how fermentation conditions influence the chemical properties and qualities of Arabica coffee beans.
Co-Authors Abd Hakim S Amelia Rahmadhani Ani Sutiani Anti Veronika Grace Octavia Hutasoit Ida Duma Riris Jenny Lasria Florita Br.Tampubolon Lisna Sevta Siburian Lissa Herayanti Marham Sitorus Moondra Zubir Muhammad Ali Athiya Zahran Nailatul Fauzah Ritonga Nur Afifah Suranda Nurhassanah Marbun Ramlan Silaban Rohani Rohani Samosir, Rafidah Almira Siti Khailafizah Sofia Ramadhani Sophia Gloria Bakara Suci Ramadhani Rangkuti Suci Trianata Situmorang Syahro Raihan Tika Nst Timotius Agung Soripada Winda Silalahi