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All Journal EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA Didaktik : Jurnal Ilmiah PGSD STKIP Subang Integrated Science Education Journal
Wan Ridha Rasyida
Universitas Islam Negeri Sumatera Utara
Agriculture, Biological Sciences & Forestry Education Social Sciences

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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.
IDENTIFIKASI PENGARUH AKTIVITAS MANUSIA TERHADAP KOMUNITAS TUMBUHAN OLEH MASYARAKAT LOKAL JALAN RAMBUTAN, DUSUN 2 JATIKESUMA, DI KECAMATAN NAMORAMBE, PROVINSI SUMATERA UTARA Muhammad Faisal; Nadia Rahma; Rizky Afifah Alfi; Wan Ridha Rasyida; Widia Azhari Saputri
Eksakta : Jurnal Penelitian dan Pembelajaran MIPA Vol 10, No 1 (2025): Eksakta : Jurnal Penelitian dan Pembelajaran MIPA
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan, UM-Tapsel

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/eksakta.v10i1.113-117

Abstract

Penelitian ini bertujuan untuk mengidentifikasi pengaruh aktivitas manusia terhadap komunitas tumbuhan di Jalan Rambutan, Dusun 2 Jatikesuma, Namorambe, Sumatera Utara. Aktivitas manusia, seperti pertanian, pembangunan infrastruktur, dan eksploitasi sumber daya alam, telah memberikan dampak signifikan terhadap struktur dan komposisi komunitas tumbuhan di daerah tersebut. Metode yang digunakan dalam penelitian ini adalah kualitatif, yang meliputi observasi lapangan dan wawancara mendalam dengan masyarakat lokal untuk menggali pengetahuan tradisional serta persepsi mereka mengenai perubahan lingkungan. Hasil penelitian menunjukkan bahwa penggunaan pestisida dan herbisida dalam praktik pertanian modern dapat mengurangi keanekaragaman spesies tumbuhan dan menyebabkan pencemaran lingkungan. Keterlibatan masyarakat lokal dalam konservasi dan pengelolaan sumber daya alam sangat penting untuk memastikan keberlanjutan ekosistem. Penelitian ini diharapkan dapat memberikan wawasan yang berguna bagi pengambil kebijakan dan masyarakat dalam upaya melestarikan keanekaragaman hayati dan mengelola sumber daya tumbuhan secara berkelanjutan.
The Effect of Media Crossword Puzzles Based on Polya’s Problem-Solving on Improving Students’ Problem-Solving Skills in the Human Skeletal System Material Wan Ridha Rasyida; Rohani Rohani
Integrated Science Education Journal Vol 7 No 5 (2026): September
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/isej.v7i5.3636

Abstract

Purpose of the study: This study aims to analyze the effect of Polya-based problem-solving Crossword Puzzle media in improving students’ problem-solving skills on the Human Skeletal System material. Methodology: The study uses a quantitative approach with a quasi-experimental method and a pretest-posttest control group design. The research sample consisted of 40 students who were divided into an experimental class and a control class using a total sampling technique. Data collection was conducted using problem-solving ability tests, observations, and questionnaires, while data analysis included normality and homogeneity tests and independent-samples t-tests, all conducted in IBM SPSS Statistics 25. Main Findings: The research results indicate that the developed media is highly feasible, as validated by experts. The average posttest score for the experimental class was 86.25, higher than that of the control class, which was 65.00. The hypothesis test results showed a t-value of 9.920 with Sig. (2-tailed) = 0.000 (<0.05), indicating a significant difference between the two groups. These findings demonstrate that the Polya problem-solving-based Crossword Puzzle media improves students’ problem-solving skills. Novelty/Originality of this study: The novelty of this study lies in integrating the Polya problem-solving steps into the Crossword Puzzle media, so it not only functions as a concept reinforcement tool but also as a means to develop systematic, analytical, and reflective thinking skills in biology learning.
Co-Authors Anjelita Sinaga Dwi Khairani Miftahul Khairani Muhammad Faisal Nadia Rahma Nazwa Ramadhona Niea Zahara Phonna Rizky Afifah Alfi Rohani Rohani Serly Kusnia Handayani Widia Azhari Saputri Zahraa Zalikha