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All Journal Oxygenius Journal Of Chemistry Education Arfak Chem: Chemistry Education Journal UNESA Journal of Chemical Education
Mardhiya, Julia
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Humanities Chemistry Computer Science & IT Education Social Sciences Other

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Pengembangan Laboratorium Virtual dan Animasi 3 Dimensi (Le Chatelier Virtual Laboratory) Pada Materi Kesetimbangan Kimia Mardhiya, Julia; Laila, Fadhilah Nur
Oxygenius: Journal Of Chemistry Education Vol 6 No 2 (2024): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v6i2.614

Abstract

The digital era requires teachers and prospective teachers to innovate in the development of effective, efficient and not boring learning media. This study aims to develop interactive learning media based on virtual laboratories and 3-dimensional animation on chemical equilibrium material called Le Chatelier Virtual Laboratory. The research and development method used is 4D. The research study was used to determine the feasibility and student responses to virtual laboratory-based interactive learning media and 3D animation on chemical equilibrium. Product validation results were performed by experts using Aiken's V data analysis. The validity result reached a value of 0.91, a category with high validity. The small-scale trial produced a fairly good response with an overall quality percentage of 83.46%. This study concluded that learning media can be used in the learning process and further research can be carried out at the disseminate stage (large scale implementation).
Efektivitas model PBL-GI dalam meningkatkan literasi sains pada materi kesetimbangan kimia di SMA Mutmainnah; Mardhiya, Julia; Nugroho, Deni Ebit
Arfak Chem: Chemistry Education Journal Vol. 8 No. 1 (2025): Arfak Chem
Publisher : Universitas Papua, Manokwari, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/accej.v8i1.837

Abstract

Ideally, students should have scientific literacy skills to understand and apply chemical concepts in real life. Students' scientific literacy is still low, especially in understanding abstract chemical equilibrium material. This study aims to analyze the effectiveness of the Problem-Based Learning-Group Investigation (PBL-GI) model in improving students' scientific literacy in chemical equilibrium material. This study used a quasi-experimental method with a nonequivalent control group design. The sample was selected using the cluster random sampling technique, and data were collected through test and non-test techniques. The results of the study showed that the PBL-GI model was effective in improving students' scientific literacy, as evidenced by the results of the hypothesis test (tcount = 4.824> ttable = 1.669), and the N-gain value of the experimental class (0.6487) was higher than that of the control class (0.5064). Thus, Ha is accepted, namely, the PBL-GI model effectively improves students' scientific literacy skills. The results of this study are expected to encourage teachers to design problem-based learning relevant to real life.
MEASURING AND PROFILING STUDENTS' CRITICAL THINKING SKILLS ON CHEMICAL EQUILIBRIUM USING THE RASCH MODEL Mardhiya, Julia; Sari, Dwy Puspita
UNESA Journal of Chemical Education Vol. 14 No. 3 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ujced.v14n3.p191-201

Abstract

This research focused on measuring students' critical thinking skills in the topic of chemical equilibrium. The instrument used is an essay test consisting of 8 questions. Data collection took place from March to April 2024. The sample size was 80 students. Data were analyzed using the Rasch Model with Winsteps 5.6.0. The instrument underwent testing for unidimensional, validity (item fit), reliability, item difficulty level (item measure), and individual ability level (person measure). The analysis showed that the instrument had a person reliability of 0.64 and item reliability of 0.96. The interaction between person and items is displayed on the Wright Map and Scalogram. The analysis of person and items provided significant information about the participants' abilities and the difficulty levels of the tested questions. A total of 4 respondents were identified as misfit according to the model. The identification of person misfit also plays a role in understanding patterns of responses that do not align with the model. The findings of this study can serve as a reflection for both students and lecturers regarding students' critical thinking skills.
Co-Authors Laila, Fadhilah Nur Mutmainnah Nugroho, Deni Ebit Sari, Dwy Puspita