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All Journal Didaktik : Jurnal Ilmiah PGSD STKIP Subang Jurnal Edukasi Biologi Journal of Innovative and Creativity
Nazwa Ramadhona
Universitas Islam Negeri Sumatera Utara
Humanities Education Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Pelatihan Pemanfaatan Limbah Cabe Kering, Wortel, Sawi, dan Kol dalam Pembuatan Pupuk Organik pada Masyarakat Desa Merek Kabupaten Karo Muhammad Faisal; Rahmadina Rahmadina; Nazwa Ramadhona; Dwi Khairani; Widya Rahayu; Nurul Hafizah Hasanah; Anjelita Sinaga; Rimsa Desela Putri; Nabila Az-Zahra; Muhammad Syafi’i
Journal of Innovative and Creativity Vol. 6 No. 1 (2026)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v6i1.6418

Abstract

Pupuk merupakan salah satu elemen penting dalam pertanian, berfungsi untuk meningkatkan kesuburan tanah dan mendukung pertumbuhan tanaman. Dalam upaya menuju pertanian yang lebih berkelanjutan, penggunaan pupuk organik semakin mendapatkan perhatian. Salah satu sumber pupuk organik yang potensial adalah limbah sayuran, seperti cabe kering, sawi, kol dan wortel. Penelitian ini dilakukan di Desa Merek, Kecamatan Merek, Kabupaten Karo. Penelitian ini bertujuan untuk mengembangkan pembuatan pupuk organik dari olahan limbah sayuran, khususnya cabe kering, sawi, tomat, dan kol. Pelatihan ini juga diharapkan dapat meningkatkan kesadaran masyarakat tentang pentingnya pengelolaan limbah yang berkelanjutan dan ramah lingkungan. Hasil analisis menunjukkan bahwa pupuk organik dari limbah sayuran ini kaya akan unsur hara esensial seperti nitrogen, fosfor, dan kalium, serta memiliki potensi untuk meningkatkan pertumbuhan pada daun. Penelitian ini menunjukkan bahwa pemanfaatan limbah sayuran sebagai bahan baku pupuk organik tidak hanya mengurangi dampak limbah, tetapi juga berkontribusi pada praktik pertanian yang lebih berkelanjutan dan ramah lingkungan.
PERANAN MIKROORGANISME RHIZOPUS SP. DALAM PEMBUATAN TEMPE Niea Zahara Phonna; Wan Ridha Rasyida; Nazwa Ramadhona; Zahraa Zalikha; Serly Kusnia Handayani; Anjelita Sinaga; Dwi Khairani; Miftahul Khairani
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 01 (2026): Volume 12 No. 01, Maret 2026 Published
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i01.11635

Abstract

Tempeh is a traditional Indonesian fermented food produced through the activity of microorganisms, particularly Rhizopus sp. This study aimed to analyze the role of Rhizopus sp. in the fermentation of soybeans into tempeh. This laboratory experimental research was conducted at the Biology Education Laboratory, Faculty of Tarbiyah and Teacher Training, Universitas Islam Negeri Sumatera Utara. Fermentation was carried out at a temperature of 28–32°C for 36–48 hours using tempeh starter. The observed parameters included the growth of Rhizopus sp. mycelium and the physical characteristics of tempeh. The results showed that Rhizopus sp. played an important role in producing tempeh with a compact structure, bright white color, homogeneous texture, and characteristic aroma.
Development of a project-based learning (PjBL)-STEM biology student worksheet on the human respiratory system to improve students’ critical thinking skills Nazwa Ramadhona; Ummi Nur Afinni Dwi Jayanti; Syarifah Widya Ulfa
Jurnal Edukasi Biologi Vol 12, No 2 (2026): Jurnal Edukasi Biologi
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/edubio.v12i2.30231

Abstract

This study aimed to develop a Biology student worksheet based on Project-Based Learning (PjBL) integrated with Science, Technology, Engineering, and Mathematics (STEM) on the human respiratory system and to determine its validity, practicality, and effectiveness in improving students’ critical thinking skills. The study employed a research and development approach using the 4D model consisting of Define, Design, Develop, and Disseminate stages; development was conducted up to the Develop stage. The needs analysis involved a Biology teacher and Grade XI students, followed by expert validation, practicality testing, and effectiveness testing. The effectiveness test involved 25 Grade XI students, while 10 students participated as representatives in the student practicality response. Data were collected using content, media, and instrument validation sheets, teacher and student response questionnaires, and pretest-posttest questions aligned with critical thinking indicators. Content validation reached 95.83%, media validation 89.58%, and instrument validation 95.00%. Practicality testing showed a teacher response of 91.66% and a student response of 96.63%. The mean pretest score of 50.20 increased to 91.56 on the posttest, with an N-gain score of 0.83 (82.65%), categorized as high. These findings indicate that the PjBL-STEM Biology student worksheet is valid, practical, and effective in supporting students’ critical thinking skills on the human respiratory system. The product has practical implications for Biology teachers seeking a structured resource for contextual, collaborative, and project-oriented learning, while further studies are needed to test its implementation in broader settings.
Co-Authors Anjelita Sinaga Dwi Khairani Miftahul Khairani Muhammad Faisal Muhammad Syafi’i Nabila Az-Zahra Niea Zahara Phonna Nurul Hafizah Hasanah Rahmadina Rahmadina Rimsa Desela Putri Serly Kusnia Handayani Syarifah Widya Ulfa Ummi Nur Afinni Dwi Jayanti Wan Ridha Rasyida Widya Rahayu Zahraa Zalikha