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All Journal Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram International Journal of Contextual Science Education
Faizul Bayani
Qamarul Huda Badaruddin Bagu University
Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Mathematics Physics Other

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Meeting 21st-Century Challenges: Cultivating Critical Thinking Skills through a Computational Chemistry-Aided STEM Project-Based Learning Approach Hulyadi Hulyadi; Faizul Bayani; Ferniawan; Sri Rahmawati; Liswijaya; Intan Kusuma Wardani; Ni Nengah Sri Swati
International Journal of Contextual Science Education Vol. 2 No. 1 (2024): January - March 2024
Publisher : Postgraduate Program, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ijcse.v2i1.609

Abstract

This research aims to explore the impact of a computational chemistry-supported STEM Project-Based Learning (PjBL-STEM) application on fostering critical thinking competencies. The project focuses on green energy, utilizing waste cooking oil and aluminum to enhance students' critical thinking skills. A pre-experimental design was employed for this study, involving a sample of 22 students. Data were collected using the 21st-Century Skills Usage Scale, along with structured and semi-structured interview forms. Critical thinking was assessed through a descriptive test comprising 10 questions. The collected data were analyzed using the Wilcoxon Signed Rank Test and thematic analysis techniques. The analysis revealed a significant improvement in the students' 21st-century skills, such as autonomy, collaboration, environmental sensitivity, communication, problem-solving, creativity, responsibility, and IT literacy. Particularly notable was the students' ability to interpret structured and patterned graphical data, which they found easier to understand compared to image and narrative data. The N-gain test results indicated that the STEM-PjBL model had a positive impact on developing critical thinking abilities, with 50% of students achieving medium and high categories. Overall, the STEM-PjBL model positively influenced the development of critical thinking competencies.
Initial Psychometric Assessment of a Multidimensional Concept Test Addressing Ethnomedicine, Phytochemistry, and DPPH–IC50 Antioxidant Assay Analysis Faizul Bayani; Joni Rokhmat; Aliefman Hakim; AA Sukarso
International Journal of Contextual Science Education Vol. 4 No. 2 (2026): April - June 2026
Publisher : Postgraduate Program, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ijcse.v4i2.1617

Abstract

Multidisciplinary training involving ethnomedicine and ethics, phytochemistry, and antioxidant bioassay analysis requires students to integrate normative reasoning, chemical concepts, and quantitative data analysis. Therefore, foundational competency and assessment quality must be established before diagnostic application. This study evaluated the first psychometric effectiveness of a multidomain idea test and outlined pre-intervention baseline performance across the three domains. The examination was administered to fifth-semester undergraduate pharmacy students enrolled in the Phytochemistry course at the Faculty of Health and Science, UNIQHBA Bagu. A 28-item mixed-format assessment, comprising multiple-choice, constructed-response, and numerical items (maximum score of 32), was administered to N = 41 pupils. Subsequently, descriptive statistics and indices from Classical Test Theory were computed, including Cronbach's alpha, item difficulty (p), D27 discrimination, and adjusted item-total correlations. The most challenging and simplest collections of objects were employed to encapsulate the extreme items. The average total score was 19.90 out of 32 (62.20% ± 13.05%), the median was 20, the range was 11 to 29, and 9 students (about 22.0%) achieved the ≥70 criterion. The performance in the domain was inconsistent. Ethnomedicine and ethics achieved a score of 7.88 ± 1.25 (78.80% of the maximum), phytochemistry received 7.29 ± 2.15 (72.90%), and DPPH–IC50 interpretation got 4.73 ± 2.54 (39.40%). The reliability was acceptable (alpha = 0.756), but the item diagnostics revealed floor and ceiling effects, along with DPPH–IC50 items that were notably challenging. The technique is suitable for initial diagnostic profiling and highlights DPPH–IC50 quantitative interpretation as the main baseline gap, thereby promoting targeted scaffolding and item adjustment to improve differentiation across the ability spectrum
Integrating Indigenous Knowledge through Contextual Project-Based Learning: Student–Healer Collaboration and Phytochemical Investigation of Traditional Ethnomedicine in Lombok, Indonesia Faizul Bayani; Joni Rokhmat; Aliefman Hakim; AA Sukarso
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol. 13 No. 3: July 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v13i3.17348

Abstract

This study investigates the implementation of a contextual Project-Based Learning model (Ethnomed-PjBL) that connects pharmacy students with traditional healers (Belian) in Lombok, Indonesia, to explore and scientifically validate ethnomedicinal formulations. Conducted in three phases field immersion, in-situ qualitative testing, and laboratory-based phytochemical analysis the model facilitated reciprocal learning and empirical inquiry grounded in Indigenous healing knowledge. Laboratory screening confirmed the presence of key secondary metabolites across all formulations, including flavonoids, tannins, alkaloids, phenolics, and terpenoids. Among the seven formulations tested, those based on Ziziphus mauritiana (bidara) and Annona muricata (soursop) showed the highest chemical diversity and antioxidant activity, with IC₅₀ values of 61.2 µg/mL and 74.5 µg/mL, respectively. These results support the pharmacological potential of traditional remedies and align with healer-reported uses related to immune function and disease prevention. Students reported significant educational gains, including improved understanding of phytochemistry, enhanced laboratory competence, critical thinking, and greater intercultural and ethical awareness. The Ethnomed-PjBL model demonstrated the capacity to embed scientific inquiry within culturally responsive frameworks, reinforcing the relevance of Indigenous knowledge in contemporary pharmaceutical education. By promoting equitable academic–community partnerships, this model contributes to broader efforts to decolonize health education and advance pharmaceutical sovereignty. It offers a replicable framework for integrating traditional knowledge into vocational health curricula, balancing scientific rigor with cultural respect. The study underscores the importance of ethical collaboration in preserving traditional knowledge systems while cultivating future health professionals who are both scientifically competent and culturally attuned.
Co-Authors AA Sukarso AA Sukarso Aliefman Hakim Aliefman Hakim Ferniawan Hulyadi Hulyadi Intan Kusuma Wardani Joni Rokhmat Joni Rokhmat Liswijaya Ni Nengah Sri Swati Sri Rahmawati