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All Journal International Journal of Evaluation and Research in Education (IJERE) SAINSMAT Jurnal Pendidikan Ekonomi (JUPE) Jurnal Pendidikan IPA Indonesia Jurnal Inovasi Pendidikan Kimia Tadris: Jurnal keguruan dan Ilmu Tarbiyah Jurnal Inovasi Pendidikan IPA Indonesian Journal of Chemistry Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jambura Journal of Educational Chemistry JCER (Journal of Chemistry Education Research) Acta Chimica Asiana Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Journal of Community Practice and Social Welfare (JaCiPS) Jurnal Pijar MIPA PREVENIRE: Journal of Multidisciplinary Science Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Innovation for Community Service Journal Jurnal Pendidikan MIPA Maharsi : Jurnal Pendidikan Sejarah dan Sosiologi Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan
Yahmin Yahmin
Universitas Negeri Malang
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Pemanfaatan Limbah Kulit Pisang Raja Nangka sebagai Capping Agent Sintesis Partikel ZnO: Variasi Pelarut Ekstraksi Nuril Mega Musfita; Fauziatul Fajaroh; Adilah Aliyatulmuna; Endang Ciptawati; Yahmin Yahmin; Nazriati Nazriati
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 19 No. 2 (2022): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v19i2.9135

Abstract

Kemunculan bakteri resisten antibiotik menjadi masalah serius di seluruh dunia. Upaya penanggulangan bakteri resisten antibiotik terus dilakukan, salah satunya dengan penggunaan material berukuran nano. Zink oksida (ZnO) merupakan salah satu partikel yang telah terbukti dapat menghambat pertumbuhan bakteri gram negatif dan gram positif. Dalam mencegah terjadinya aglomerasi pada sintesis ZnO berukuran nanometer dapat ditambahkan capping agent alami berupa senyawa metabolit sekunder pada ekstrak kulit pisang raja nangka. Adapun langkah yang dilakukan adalah: 1) ekstraksi metabolit sekunder kulit pisang raja nangka, 2) uji fitokimia, 3) penentuan kadar total flavonoid dan polifenol, 4) sintesis ZnO dengan capping agent alami ekstrak kulit pisang raja nangka, 5) karakterisasi ZnO, dan 6) uji aktivitas antibakteri ZnO. Hasil analisis kualitatif melalui uji fitokimia serta analisis kuantitatif melalui penentuan kadar total polifenol dan flavonoid menunjukkan bahwa ekstrak kulit pisang raja nangka etanol (96%)-air 2:1 (v/v) memiliki kadar metabolit sekunder yang lebih tinggi dibandingkan ekstrak kulit pisang raja nangka etanol (96%)-air 1:1 (v/v). Partikel ZnO berhasil disintesis menggunakan capping agent alami ekstrak kulit pisang raja nangka. Kadar metabolit sekunder yang berbeda pada masing-masing ekstrak mempengaruhi ukuran, morfologi, dan aktivitas antibakteri ZnO hasil sintesis.
Enhancing the scientific argumentation skills of prospective chemistry teacher using integrated chemical literacy strategy Sulistina, Oktavia; Rahayu, Sri; Dasna, I Wayan; Yahmin, Yahmin
International Journal of Evaluation and Research in Education (IJERE) Vol 13, No 6: December 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijere.v13i6.26935

Abstract

This research aims to enhance prospective chemistry teachers’ scientific argumentation skills through integrated chemical literacy strategy (ICLS) learning and to examine the patterns of relationship between students’ scientific argumentation skills in terms of content and socio-scientific issues (SSI). The study used mixed methods: the embedded design with embedded experimental model. The research sample was 88 students, the control and the experimental groups each consisted of 44 students. The research instrument used scientific argumentation skills test: an open and closed essay test, and interviews with 10 students as selected respondents. Data analysis used descriptive analysis, N-gain, Mann-Whitney test, effect size test, and qualitative analysis. The results showed that ICLS significantly had a great influence on enhancing students’ scientific argumentation skills. The interview results show that: the level of scientific argumentation skills related to SSI is not consistently related to content-related scientific argumentation skill; students who have scientific argumentation skills related to SSI levels 4, 3, and 2 can provide the correct claim, data, warrant, backing, and rebuttal to scientific arguments related to content if guided by guiding questions; student that had higher level of scientific argumentation skills need fewer guiding questions.
Dampak Pembangunan Sanitasi dan Instalasi Pengolahan Limbah Cair Domestik Sederhana Pondok Pesantren Kalimasada Jombang Sanjaya, Eli Hendrik; Edy, Duwi Leksono; Nasih, Ahmad Munjin; Alfianto, Imam; Santoso, Aman; Yahmin, Yahmin
Innovation for Community Service Journal Vol 2 No 2 (2024): Oktober 2024
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v2i2.14833

Abstract

Program pengabdian ini bertujuan untuk meningkatkan sanitasi dan mengelola limbah cair domestik di Pondok Pesantren Kalimasada, Jombang. Upaya untuk mencapai tujuan tersebut, program melibatkan langkah-langkah seperti penilaian awal, perencanaan desain instalasi pengolahan limbah cair, pembangunan instalasi, pelatihan untuk penghuni, serta operasi, pemeliharaan, pemantauan, dan evaluasi berkelanjutan. Upaya ini dilakukan untuk menjaga kebersihan dan kesehatan lingkungan serta memberikan manfaat positif bagi pondok pesantren dan masyarakat sekitar. Berdasarkan hasil angket pra dan pasca program yang dikuatkan dengan observasi saat atau selama program, diperoleh hasil peningkatan yang signifikan antara pra-saat-dan pasca program. Dimulai dari ketersediaan fasilitas yang sebelumnya Pondok Pesantren Kalimasada Jombang belum memiliki failitas khusus untuk sistem sanitasi dan instalasi menjadi memiliki, dampak dari tersedianya fasilitas ini berbanding lurus dengan kebersihan yang akan tercipta. Selanjutnya pada perubahan mitra, aspek pengetahuan mengalami peningkatan dari 15% menjadi 45% hingga 95%. Kemudian pada aspek keterampilan mulai dari 25% menjadi 55% dan 85%. Hasil ini dikuatkan berdasarkan hasil wawancara yang menyampaikan terbantu dengan adanya pembangunan sistem sanitasi dan instalasi yang dibangun oleh tim, selain itu program ini juga memperoleh testimoni positif mitra.
Developing an Instrument to Assess Chemical Literacy for Prospective Chemistry Teachers Ardyansyah, Ananta; Rahayu*, Sri; Munzil, Munzil; Yahmin, Yahmin; Alsulami, Naif Mastoor
Jurnal Pendidikan Sains Indonesia Vol 13, No 1 (2025): JANUARY 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jpsi.v13i1.42095

Abstract

The lack of instruments designed to assess chemical literacy among prospective chemistry teachers highlights the need for robust tools to support science education. This study develops and validates an instrument to measure chemical literacy, addressing this gap and contributing to improved pedagogical practices. In this study, a chemical literacy instrument for general chemistry was developed, drawing on existing frameworks of chemical literacy. This research employs a development-based approach (RD), encompassing literature review, instrument development, and quality testing. The quality of the instrument was evaluated based on its reliability and validity. The validity was evaluated by expert panel review, difficulty index, discrimination index, and pearson correlation value. In this study, a multiple-choice chemical literacy test instrument was successfully developed using the PISA 2025 scientific literacy framework, resulting in 23 valid items. The PISA framework was chosen for its perceived dynamism compared to other frameworks. The reliability of the developed instrument reached 0.818, indicating that the questions are highly reliable. Future improvements to the instrument are necessary, with a focus on ensuring that all items fully meet the established validity criteria
Pengembangan Instrumen Assessment IDEAL Problem Solving Pada Materi Koloid Amaliah, Nor; Munzil, Munzil; Yahmin, Yahmin
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 1 (2025): Maret
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat141695402025

Abstract

Problem solving is one of the abilities that students must have in the 21st century. This is because students' ability to solve problems is expected to increase their higher order thinking skills (HOTS) competency. The ability to measure problem solving can be assessed through test instruments in the form of questions containing problems. This research aims to analyze problem solving abilities in colloidal materials through the development of the IDEAL Problem Solving assessment instrument. This instrument includes five indicators, namely Identify the Problem, Define the Outcome, Explore Possible Strategies, Anticipate Outcome & Act, and Look back and Learn. The research was conducted for 3 months at SMAN 1 Sungai Tabuk class XI semester II (even). The method used is development research or R&D (Research and Development) research. The development of this instrument adapts the ADDIE development model by following five steps, including (1) Analyze (analysis), (2) Design (planning), (3) Develop (development), (4) Implementation (implementation), (5) Evaluate (evaluation). Data analysis was carried out quantitatively with statistical tests. The empirical validity results show that the instrument is valid and reliable to use and meets the criteria for a good level of difficulty and discrimination.
Investigating Eleventh Graders' Critical Thinking Skills on Reaction Rate Muntholib, Muntholib; Khusmawardani, Eli; Yahmin, Yahmin; Rosli, Mohd Shafie
Tadris: Jurnal Keguruan dan Ilmu Tarbiyah Vol 7 No 2 (2022): Tadris: Jurnal Keguruan dan Ilmu Tarbiyah
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/tadris.v7i2.12016

Abstract

Critical thinking skills are high-order thinking skills in which students are required to solve complex problems. The topic of reaction rate has conceptual knowledge, cognitive skills, and psychomotor skills that can be used to assess and develop students' critical thinking skills. This study aims to analyze the critical thinking skills of science eleventh graders on reaction rate. This research applies the survey research method. As the research instrument, it uses a critical thinking skills test on the reaction rate consisting of 27 multiple choice questions with a reliability of 0.756 by involving 153 public senior high school students. The authors develop this test. The results show that the average score of respondents’ critical thinking skills was 33.66 (low category). At the sub-skill level, the average score of respondents' skills in interpreting was 32.73 (low), analyzing was 29.04 (low), inferencing was 36.77 (low), evaluating was 24.61 (low), and explaining was 33.88 (low). This shows that the learning experiences of the students have not been able to develop their critical thinking skills. Therefore, this research suggests the need for a learning strategy that can be used to improve students' critical thinking skills.
Virtual Laboratories in Science Education: A Systematic Review of Effectiveness on Conceptual Understanding and Learning Outcomes Meronda, Devi Apriana; Widarti, Hayuni Retno; Yahmin, Yahmin
Jurnal Pendidikan MIPA Vol 26, No 3 (2025): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v26i3.pp2020-2042

Abstract

Virtual laboratories (VLs) have emerged as a significant innovation in science education, enriching learning experiences, deepening conceptual understanding, and providing more flexible and safer access to experiments. Nevertheless, the implementation of VLs still faces challenges, particularly in developing practical skills and ensuring integration with physical laboratories. This study aims to present a comprehensive review of the impacts, potentials, and limitations of VLs through a systematic literature review. The method employed follows the PRISMA protocol, with Scopus as the primary database. Out of 489 initial articles, only 21 articles met the inclusion and exclusion criteria after the screening process. The analysis was directed toward two main research questions: (1) to what extent does the use of interactive simulation–based virtual laboratories enhance conceptual understanding, and (2) how do students’ learning outcomes compare with those of traditional laboratory practices? The findings revealed that the development of VLs is typically grounded in constructivist approaches and instructional design models that emphasize the creation of interactive experiences that resemble real experiments. Furthermore, the results suggested that students taught using VLs achieve better learning outcomes compared to those taught through traditional methods. VLs have been shown to support improvements in conceptual understanding, laboratory skills, scientific literacy, questioning ability, analytical thinking, and cognitive performance, all of which contribute to strengthening critical thinking skills. Thus, VLs not only serve as a solution to the limitations of physical facilities but also play a crucial role in fostering critical thinking as one of the key competencies of the 21st century.   Keywords: virtual laboratory, science education, and learning outcomes. 
Profil Pemahaman Konsep Hidrolisis Garam: Studi Pada Siswa SMA di Jawa Timur Habiddin, Habiddin; Indasari, Krisma Dewi Firdaus; Kurnia, Eva; Akmal, Bernada Uni Tatya; Yahmin, Yahmin
Jambura Journal of Educational Chemistry Vol 5, No 1 (2023): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v5i1.19305

Abstract

Penelitian ini bertujuan untuk mendeskripsikan pemahaman konsep siswa di Jawa Timur pada topik hidrolisis garam. Penelitian ini melibatkan 97 siswa di Kabupaten Malang bagian timur, 76 siswa di Lamongan dan 74 siswa di Kabupaten Malang bagian selatan. Pengambilan data dilakukan menggunakan instrument four-tier dengan jumlah soal 24. Hasil penelitian menunjukan adanya dinamika terhadap pemahaman konsep siswa pada materi hidrolisis garam. Dari tiga kelompok siswa yang berpartisipasi dalam penelitian ini, siswa yang berasal dari lamongan menunjukan pemahaman konsep yang lebih baik.
A Phenomenology of Project Based Learning in Vocational Analytical Chemistry Education Silvia, Debora; Munzil, Munzil; Yahmin, Yahmin
Jurnal Inovasi Pembelajaran Kimia Vol. 7 No. 2 (2025): OCTOBER 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jipk.v7i2.69457

Abstract

This study aims to explore the challenges, strategies, and impacts of implementing Project-Based Learning (PjBL) in the Analytical Chemistry program at Vocational High Schools (SMK). Using a qualitative phenomenological approach, data were collected through interviews, observations, and documentation involving teachers and students actively engaged in PjBL activities. The analysis followed Moustakas’s phenomenological steps, including data reduction, categorization, and interpretation. The findings revealed three key themes: (1) resource and infrastructure limitations, (2) teachers’ adaptive and innovative strategies, and (3) students’ creativity and entrepreneurial motivation. Despite facing financial and facility constraints, teachers demonstrated resilience by utilizing local resources, modifying learning designs, and applying reflective assessment. Students, in turn, showed high creativity and problem-solving skills by developing innovative chemical-based products that integrated environmental awareness and entrepreneurship. The study concludes that PjBL effectively enhances students’ higher-order thinking, creativity, and motivation in vocational chemistry learning. However, its sustainability depends on institutional support, adequate funding, and collaboration with industry. These findings highlight the importance of developing structured, project-based digital modules to strengthen teacher competence and ensure meaningful, future-oriented learning in vocational education.
Chemistry Teachers’ Perspectives to Enchancing Representational Competence in Learning Thermochemistry Rosyida, Ima; Widarti, Hayuni Retno; Yahmin, Yahmin
Jurnal Pendidikan MIPA Vol 25, No 3 (2024): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

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

Abstract

Representational competence is very essential for students because it is associated with the students' ability to use, interpret, translate and integrate chemical representations to understand chemical concepts properly. In this case, implementation of the various representations utilization is required in learning Thermochemistry to improve students' representational competence to fully understand Thermochemistry. Therefore, this study aims to analyze teachers' perceptions towards the understanding and implementation of chemical representations in chemistry learning to improve students' representational competence in thermochemistry. This research is a descriptive quantitative research conducted using survey method that involved 30 chemistry teachers. The sample in this study was taken by purposive random sampling at public and private high schools in East Java. The data were collected through a questionnaire using google form application. According to the results of the study 63.3% of teachers still have difficulty in teaching students the concept of thermochemistry using submicroscopic representations. The majority of teachers only use symbolic representations, even though the other two representations are very important. Although 77% of teachers have understood chemical representations, in teaching and measuring concept understanding, teachers have not integrated chemical representations. This is due to their lack of self-awareness about the importance of using various representations in improving students’ representational competence. Thus, training on representations is necessary in improving teachers’ understanding on chemical representations. The findings of the study stated that teachers’ understanding of representation and teachers’ experience in participating in the trainings contributed to the effectiveness of the implementation of various chemical representations utilization to improve students’ representational competence on the concept of thermochemistry.       Keywords: representational competence, chemical representation, and thermochemistry.DOI: http://dx.doi.org/10.23960/jpmipa/v25i3.pp1559-1576
Co-Authors A. Cahyarini, A. Adilah Aliyatulmuna Ahmad Munjin Nasih Akmal, Bernada Uni Tatya Alsulami, Naif Mastoor Amaliah, Nor Aman Santoso Amry, Urwatil Wutsqo Ananta Ardyansyah Aninda Indriani Anisyah Dasa Astarina Ardianty, Annida Elfiana Citra Ardyansyah, Ananta Astrid Kinantya Paramita Astrid Kinantya Paramita Ciptawati, Endang Deni Ainur Rokhim DWI SURYANTO Edy, Duwi Leksono Eli Hendrik Sanjaya Eli Khusmawardani Endang Budiasih Fauziatul Fajaroh Firmasyah, Defan Habiddin Halimah Mustika Nurhayati Harno Dwi Pranowo Hasanah, Samudra Mutiara Hayuni Retno Widarti Herunata Herunata I Wayan Dasna Ida Bagus Suryadharma Imam Alfianto Indasari, Krisma Dewi Firdaus Khoirul Faqih Khusmawardani, Eli Kurnia, Eva Lailatul Ilmiyah Laili Mei Sulistiyani Maria Ulfa Mashfufatul Ilmah Meronda, Devi Apriana Mohd Shafie Rosli Muhammad Muchson Muhammad Syaiful Hadi Muntholib Munzil Nazriati Nazriati dkk. Nuril Mega Musfita Nursida Djaen Oktavia Sulistina Paramita, Astrid Kinantya Parlan . Permatasari, Margaretha Bhrizda Rahayu*, Sri Ratna Kumala Dewi Ratna Kumala Dewi Rena Amelia Ria Armunanto Rosida, Nuchrurita Rosli, Mohd Shafie Rosyida, Ima S. Rahayu, S. Silvia, Debora SRI RAHAYU Sri Rahayu Suhadi Ibnu Suhadi Ibnu Suharti Suharti Sumari Sumari Supriadi Supriadi Suryani Indah Permatasari Vella Aulia Illahi Yayuk Wirayani Zahirah, Dhea Fairuza