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All Journal Tropical Medicine Journal Scriptura Jurnal Pendidikan Kimia Intuisi Journal of Mathematical and Fundamental Sciences BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) INKUIRI : Jurnal Pendidikan IPA Jurnal SOLMA Chemistry Indonesian Journal of Chemical Research Jurnal Ilmiah Sekolah Dasar Walisongo Journal of Chemistry Jurnal Pembelajaran Sains Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika Jurnal Inovasi Pendidikan dan Sains Panrannuangku Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Bhinneka Student Scientific Creativity Journal Jurnal Ilmiah Pengabdian dan Inovasi Room of Civil Society Development Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Morfologi : Jurnal Ilmu Pendidikan, Bahasa, Sastra dan Budaya Bulletin of Chemical Reaction Engineering & Catalysis Indonesian Journal of Biology Education Asian Journal of Environmental Research Jurnal Ilmiah Manuntung: Sains Farmasi dan Kesehatan Room of Civil Social Development Paradigma: Jurnal Filsafat, Sains, Teknologi, dan Sosial Budaya STEM Education International
Dian Nugraheni
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Optimalisasi e-Katalog Laboratorium IPA terhadap Peningkatan Kemampuan Dasar Laboratorium Mahasiswa Pendidikan IPA Universitas Negeri Malang Anggi Arista, Rini; Nida, Safwatun; Nugraheni, Dian; Nurul Qomaliyah, Eka; Mulyati, Yayuk; Sugiyanto; Nabilah, Wardah
Paradigma: Jurnal Filsafat, Sains, Teknologi, dan Sosial Budaya Vol. 30 No. 3 (2024): Paradigma: Jurnal Filsafat, Sains, Teknologi, dan Sosial Budaya
Publisher : Universitas Insan Budi Utomo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33503/paradigma.v30i3.660

Abstract

Learning Natural Sciences (IPA) in tertiary institutions has a vital role in forming basic scientific understanding and skills in students. One of the innovations needed to improve students' basic laboratory capabilities is developing learning media in laboratory e-catalogs. E-catalog is an electronic-based information system that provides information regarding tools, materials, and equipment available in the laboratory, including information related to laboratory safety. It allows students to access information in a structured and easy-to-access manner. This research aims to assess the effectiveness of a laboratory e-catalog in improving students' understanding and basic laboratory skills using a questionnaire method for 59 respondents from Science Education students in Biochemistry and Genetics courses. Based on data from evaluation results using the questionnaire method, it shows that the science education department's laboratory e-catalog has proven to be effective in increasing students' knowledge regarding the use and storage techniques of laboratory equipment and materials, which can increase students' knowledge regarding basic laboratory capabilities which influence students' interest in learning and the learning process.
Intermolecular Characterization of Chitosan from the Exoskeleton of Windu Prawn (Penaeus monodon) and Mangrove Crab (Scylla sp.) Arista, Rini Anggi; Nugraheni, Dian; Qomaliyah, Eka Nurul; Mulyati, Yayuk; Maulana, Jibril; Dewi, Kadek Risa Rivana; A'yuni, Shahira Qistan
Indonesian Journal of Chemical Research Vol 13 No 3 (2026): Edition for January 2026
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2026.13-rin

Abstract

Chitosan (C6H11NO4)n is a chitin-derived polymer that has good biocompatibility, biodegradability, and bioabsorbability properties. This compound can be obtained from exoskeleton waste such as mangrove crabs and Windu prawn. This study aims to evaluate the comparison of chitosan levels based on the degree of deacetylation (%DD) from the waste shell, head, and leg of Windu prawn and mangrove crab shell waste obtained from the coastal area of Pasuruan, East Java. The extraction method was carried out through the stages of deproteinization, demineralization, and deacetylation using an alkaline solution, and then the characterization of molecular structure and %DD was carried out using an FTIR spectrophotometer. The results showed that chitosan from Windu prawn shell had the highest %DD of 73.0%, while mangrove crab shell and prawn head and leg showed lower values of 55.3% and 63.9%. This difference in %DD value indicates a variation in the success rate of deacetylation due to differences in biomaterial composition. The results of SEM testing showed that the use of the type of material in the manufacture of chitosan would affect the results of the surface morphology produced, where the Windu prawn shell produced the flattest surface.
Mobile-Aided PjBL for Improving Junior High School Students’ Critical Thinking and Learning Motivation Yulianti, Erni; Husna, Ihda Maf'ulatul; Fitriyah, Isnanik Juni; Nugraheni, Dian; Hamimi, Erti
Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika Vol. 9 No. 3 (2025): November
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/h8831197

Abstract

Project-Based Learning (PjBL) is often proposed as a way to engage students through authentic tasks, yet classroom observations in junior high schools in Malang indicated that students’ critical thinking and learning motivation were still relatively low. This study examined whether PjBL supported by a mobile application could improve seventh-grade students’ critical thinking and learning motivation on the topic of substances and their changes. A quasi-experimental design was used with 62 students from one junior high school (30 in the experimental group and 32 in the control group). The intervention combined PjBL with a mobile application and supporting materials (modules and student worksheets). Expert review showed that the learning media met acceptable validity criteria, with an average score above 83 percent (high validity). The instruments demonstrated good internal consistency, with Cronbach’s alpha of 0.853 for the critical thinking test and 0.929 for the learning motivation questionnaire. Independent-samples t-tests indicated statistically significant differences between groups (p < 0.05). The experimental group scored higher than the control group in critical thinking (t(60) = 2.33, p = 0.023, d = 1.02) and learning motivation (t(60) = 11.83, p < 0.001, d = 1.13). These results suggest that, in this context, mobile-aided PjBL was associated with higher critical thinking and learning motivation than conventional instruction, and it may be considered for teaching substances and their changes.
Profile of Junior High School Students' Problem-Solving Ability on The Topic of Human Relationship to Ecosystems Through The Role-playing Method Alvi Rohmah; Indra Fardhani; Dian Nugraheni; Habiddin Habiddin
STEM Education International Vol. 1 No. 1 (2025): STEM Education International
Publisher : PT Ahan Group Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71289/zrhqax71

Abstract

This research aims to elucidate the problem-solving capabilities of junior high school students about human relationships with ecosystems, particularly river ecosystems, utilising the role-playing method within a debate framework among represented professional groups. This study involved 25 seventh-grade students from an MTs Negeri in Malang Regency. Students were grouped to simulate various occupations, including physicians, government representatives, scientists, and environmental advocates. Data was gathered using LKPD responses, observation forms, and interview protocols. The data analysis indicates that the environmental volunteer profession group scored the highest on the LKPD, scoring 94. Additionally, as assessed by observation, the average percentage derived from the student problem-solving skill profile was 85%, categorised as very good. The interview results indicated that students responded positively to the learning activities.  
Mobile-Aided PjBL for Improving Junior High School Students’ Critical Thinking and Learning Motivation Yulianti, Erni; Husna, Ihda Maf'ulatul; Fitriyah, Isnanik Juni; Nugraheni, Dian; Hamimi, Erti
Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika Vol. 9 No. 3 (2025): November
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/h8831197

Abstract

Project-Based Learning (PjBL) is often proposed as a way to engage students through authentic tasks, yet classroom observations in junior high schools in Malang indicated that students’ critical thinking and learning motivation were still relatively low. This study examined whether PjBL supported by a mobile application could improve seventh-grade students’ critical thinking and learning motivation on the topic of substances and their changes. A quasi-experimental design was used with 62 students from one junior high school (30 in the experimental group and 32 in the control group). The intervention combined PjBL with a mobile application and supporting materials (modules and student worksheets). Expert review showed that the learning media met acceptable validity criteria, with an average score above 83 percent (high validity). The instruments demonstrated good internal consistency, with Cronbach’s alpha of 0.853 for the critical thinking test and 0.929 for the learning motivation questionnaire. Independent-samples t-tests indicated statistically significant differences between groups (p < 0.05). The experimental group scored higher than the control group in critical thinking (t(60) = 2.33, p = 0.023, d = 1.02) and learning motivation (t(60) = 11.83, p < 0.001, d = 1.13). These results suggest that, in this context, mobile-aided PjBL was associated with higher critical thinking and learning motivation than conventional instruction, and it may be considered for teaching substances and their changes.
Co-Authors A'yuni, Shahira Qistan Abraham Tiandno Witjaksono Agung Mulyo Setiawan Agus Purwanto Ainul Yaqin Aisyah Az-Zahro Alvi Rohmah Amalia, Berlyana Anggi Arista, Rini Anisa Wuri Kartika Annisa, Nidya Anshori, M. Wildan Antika, Rizky Arief Muttaqiin Arifin, Achmad Saiful Asep Purwo Yudi Utomo Astuti, Nisa Sindi Az-Zahro, Aisyah Az-Zahro, Fatimah Daru Anggara Murty Dewi, Alfina Kusuma Dewi, Kadek Risa Rivana Dikhi Firmansyah Dwi Saryanti Eka Nurul Qomaliyah Elvira Hermawati Erti Hamim Erti Hamimi Evi Nur Mala Sari Fahria, Mila Farah Dhilah Balqis Fardhani, Indra Fatimah Az-Zahro Fatmawati, Fenti Fiel'ardh, Khalifatulloh Fitroh Rafli Firdausi Habiddin Hanandya Rahma Dinda Destriani Hanifiyah, Fitroh Haryati, Titin Hendra Helmanto Husna, Ihda Maf'ulatul Husnayaini, Nida Ilmiatunnisa, Rahmatin Ilmiatunnisa’, Rahmatin Isnanik Juni Fitriyah Jibril Maulana Kusumarini, Shelly Lia Dewi Juliawaty Lina Sinatra Wijaya Maghfiroh Maghfiroh Mahardika Agus Wijayanti Mohammad Iqbal Mabruri, Mohammad Iqbal Muhammad Fajar Marsuki Muhardjito Muhardjito Mulyani, Sri Munzil Nabilah, Wardah Natasya Intania Pertiwi Nida Rufaida Nina Chairani Fatimah Nisa Sindi Astuti Norman Yoshi Haryono Novida Pratiwi Nurul Qomaliyah, Eka Pertiwi, Natasya Intania Prabowo, Himawan Ganjar Pranata, Ivandra Bagus Praptawati, Atika Purnomo Putri Dzakiyyatul Khotimah Putri, Viola Syarwendah Ramadhan, Miftahul Akbar Rini Anggi Arista Riyanto, Obaja Eden Santosa Rosa Fadilla, Silvya Rosita Assyifa Purba Rossi Galih Kesuma Said Hasan Salsabila, Nanda Fitria Santosa, Khalis Nadhira Saryanti, Dwi Setiawan, A. M. Shinta Permata Sari Sri Retno Dwi Ariani SUGIYANTO Sugiyarta Stanislaus, Sugiyarta Supargiyono - Syach, Muhammad Zahran Edlian Tri Ratnaningsih Tunazjah, Savina Ulfi Akhyatussyifa Vianni Nifattien Vrisna Putri Wicaksono, Azizul Widadi, Zahir Widowati, Tamara Rahma widya astuti Wuri Wuryandani Yana Maolana Syah Yayuk Mulyati Yayuk Mulyati Yulianti, Erni Zulfa Fahmy