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EduChemia: Jurnal Kimia dan Pendidikan
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 25024778     EISSN : 25024787     DOI : http://dx.doi.org/10.30870/educhemia.v6i2.10412
Core Subject : Science, Education, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology
Focus and Scope Educhemia (Jurnal Kimia dan Pendidikan) is Periodicals published the results of research related to the development of science and technology in the field of Chemistry and Chemistry education as a form of intellectual property Chemistry: Organic chemistry, Inorganic chemistry, Biochemistry, Physical chemistry, Analytical Chemistry, Environmental Chemistry, Material chemistry, Ethnochemistry. Chemistry education: chemistry learning design and model, chemical education curricula, Technology innovation and media/multimedia in chemistry learning, development of evaluation tools, lesson study and classroom action research
Arjuna Subject : Kimia(semua kategori) - Kimia Organik
Articles 207 Documents
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Exploring Chemistry Teachers' Awareness of FabLab for Transformative Educational Practices Khefrianti, Syinta; Rustaman, Nuryani; Kadarohman, Asep; Wiji, Wiji
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.24418

Abstract

Learning chemistry materials using 2D media is currently unable to provide a clear picture of some abstract and microscopic chemical content. Several studies show that many students have difficulty with chemistry because they cannot visualize structures and processes at the submicroscopic level and relate them to other levels of chemical representation. The purpose of this study was to determine the teachers' understanding of new technology that can be used to help students translate 2D into 3D in real form, namely using FabLab. This research is descriptive qualitative research with the research subjects 39 high school teachers and vocational school teachers in West Java. There are three stages in this research, data reduction, data presentation and conclusion drawing. The results showed that all teachers do not know or understand FabLab, although there are teachers who have attended training related to FabLab.Only 23% of teachers are aware of 3D printing but they do not know what is meant by FabLab. There are two schools that have 3D printing facilities, but they are not utilized, one of the reasons being the lack of technological mastery. This research is useful in designing professional development training for chemistry teachers in the field of technology, specifically in the utilization of FabLab.
Front Matter Vol 9 No 2 (Cover, Editorial Board, Preface, Table of Contents) EduChemia, EduChemia
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.29853

Abstract

Development of Holokul: 3D Hologram Learning Media on Molecular Structure Pamenang, Fransisca Ditawati Nur; Nathasya, Paschalia Melinda
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.24694

Abstract

Learning media refers to equipment designed and developed to convey information, facilitating the effective transmission of knowledge. Molecular structure is a complex chemical concept containing abstract ideas, which can challenge student comprehension. To address this, the development of 3D hologram learning media for molecular structures aims to provide students with a visual representation for enhanced understanding. This research aims to (1) understand the process of developing 3D hologram learning media for molecular structures via the ADDIE development model and (2) assess the validity and practicality of the developed media. The supporting instruments for this research include product and instrument validation sheets, product readability questionnaires, and question items. The study involved six students from the 12th grade. Descriptive analysis of the data reveals that the developed product aligns with the ADDIE model, achieving a validation rate of 90%. The practicality of the product is determined to be 89%. Therefore, the developed product can be utilized as a learning media for molecular structures via 3D holograms.
Back Matter Vol 9 No 2 (Author Guidelines, Subject Index, Author Index, Acknowledgment) EduChemia, EduChemia
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.29854

Abstract

Synthesis of Biodiesel from Used Cooking Oil Using Composite Photocatalyst from Milkfish Bones And TiO2 Adiwibowo, Muhammad Triyogo; Wardalia, Wardalia; Kustiningsih, Indar; Daimah, Radhini Salma; Nugroho, Adhitiya Aprianto; Maemunah, Shiva; Alawiyah, Rizqi
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v10i1.29402

Abstract

The increasing number of vehicles in Indonesia has increased air pollution and fuel consumption. The fuels commonly used come from fossil, the availability of which is limited. One solution that can be applied is switching to alternative energy, such as biodiesel from vegetable oils, including used cooking oil. This study investigates the effect of reactant ratio, catalyst weight, UV exposure, and catalyst reusability on biodiesel yield and characteristics (density and viscosity) according to Indonesian national standards (SNI). The method used involves the impregnation of CaO catalysts with TiO2 photocatalysts and simultaneous transesterification-esterification reaction for biodiesel production, with oil to methanol molar ratios of 1:6, 1:9, and 1:12 and catalyst weights of 3, 5, and 7%. The results showed that the best product had a yield of 90.6%, a density of 882 kg/m³, and a viscosity of 2.45 mm2/s at a reactant ratio of 1:9 and a catalyst weight of 5%, with UV exposure for 4 hours at a temperature of 65°C. XRD and EDS analysis revealed the presence of CaO-TiO2 compounds in the synthesized photocatalyst, and the GCMS analysis shows that FAME (fatty acid methyl ester) content in the biodiesel is more than 96%.
Development of Merdeka Curriculum Teaching Modules for PjBL-Based Green Chemistry Learning Said, Umar; Zidny, Robby; Aisyah, Ratna Sari Siti
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v10i1.30716

Abstract

The world of Indonesian education, which is already experiencing a learning crisis, is increasingly affected by the Covid-19 pandemic. The government through the Indonesian Ministry of Education and Culture developed an merdeka curriculum to solve this problem. However, in its implementation, there are still many educators who have not been able to compile teaching modules for the merdeka curriculum. In fact, the learning process of the merdeka curriculum without teaching modules experiences material irregularities. This study aims to develop an “Merdeka Curriculum Teaching Module for PjBL-based Green Chemistry Learning”. The research design used is R&D with the ADDIE model. Literature study and questionnaire data collection techniques. The data analysis technique uses the Aiken's V 0.73 validation instrument on teaching module material and media validated by 10 validators. Teaching modules that were declared valid were tested on 43 student’s of class X SMAN. The results showed that the teaching module was proven valid with a material aspect validity value of 0.96 and a media aspect of 0.95 and obtained student response results with a value of 0.84% (including very good criteria). It can be concluded that the teaching module developed is valid and feasible to use as a school teaching tool.
Effectiveness of Anti-Lice Shampoo from Lemongrass Stalk (Cymbopogon Citratus) Sjamsiah, Sjamsiah; Nurwahyuni, Nurwahyuni; Gani, Rahmiani
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v10i1.30603

Abstract

Head lice (Pediculus humanus capitis) are ectoparasites that attack the human head, causing excessive itching. To overcome this problem, shampoo with active substances from natural sources can be used, namely, kitchen lemongrass (Cymbopogon citratus). This study was designed to determine the effects of various concentrations of lemongrass stalk extract and the optimal concentration of the anti-head lice shampoo on head louse mortality. The results of the phytochemical screening revealed that the lemongrass stalk extract contains flavonoids, tannins, terpenoids, saponins and alkaloids. Lemongrass stalk extract can be used as a shampoo formulation with several concentrations ranging from 3%, 5%, 7% and 9%. The characteristic results revealed a thick liquid, homogeneous, brown to blackish brown color, a characteristic smell of the lemongrass stalk, a foam height range of approximately 6–5 cm, a pH range of approximately 5–6, and a viscosity range of approximately 100–5700 cP. The optimum concentrations that can kill head lice effectively and meet the SNI requirements for an adequate and safe shampoo to use are shampoo at concentrations of 5% and 7%.
AI-Powered Automated Assessment: Aiken Index Analysis of Content Validity Scientific Literacy Asesment Putri, Bela Anisa; Yamtinah, Sri; Shidiq, Ari Syahidul; Widarti, Hayuni Retno; Wiyarsi, Antuni
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v10i1.30640

Abstract

This study aims to analyze the content validity of the Scientific Literacy Asesment (SLA) instrument, which integrates ethnochemistry based on artificial intelligence through expert agreement based on the Aiken index so that the instrument can measure what should be measured. The research method used is a qualitative descriptive method based on the results of content validity calculated through the Aiken formula. Content validity data were obtained from 10 experts, namely, chemistry education lecturers from UNS, UNY, and UM and high school chemistry teachers in Surakarta, through focus group discussions (FGDs). Content validity is assessed by a score of 1 – 4, namely, irrelevant (TR) with a score of 1; less relevant (KR) with a score of 2; quite relevant (CR) with a score of 3; and relevant (R) with a score of 4 for each question item with aspects measured, namely, aspects of content, language, and construct.  Based on the calculation, 15 questions were declared valid with an Aiken index value ≥ 0.73.
Phosphate Accumulation Using MgO-Fe3O4/Agarose/Oxalic Acid Gel as a Diffusive Gradient in Thin Films (DGT) Binding Layer Dinira, Layta; Rafif, Sullahudin Ahmad; Ulayya, Salwa; Rumhayati, Barlah; Darjito, Darjito; Sabarudin, Akhmad
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v10i1.29113

Abstract

Monitoring phosphate concentration in waters is critical because excessive phosphate can lead to the death of aquatic organisms. Phosphate can be monitored via a passive sampler called Diffusion Gradient in Thin Films (DGT). This study combines MgO and Fe3O4 impregnated in agarose crosslinked with oxalic acid to accumulate phosphate from the solution as a DGT binding gel. The parameters observed in this study were MgO/Fe3O4 mass ratio (1:3, 1:1, 3:1), accumulation time (20, 40, 60, 120, 240, and 1440 min), phosphate concentration (0.2, 0.4, 0.6, 0.8, and 1 mg/L) and pH (4, 5, 6, 7, and 8) on phosphate accumulation. XRD pattern confirmed that the adsorbents used were MgO and Fe3O4. SEM analysis showed that the gel had an average pore size of 31.78 μm, and the adsorbents were evenly distributed. Gel with MgO/Fe3O4 mass ratio 3:1 can adsorb phosphate up to 97.19 ± 0.36%. The phosphate accumulation reached optimum after a minimum adsorption time of 4 hours and when the phosphate concentration in the solution was 0.4 mg/L. The solution's pH had no significant effect on phosphate accumulation. This study shows that MgO-Fe3O4/agarose/oxalic acid gel is an excellent binding gel to accumulate phosphate from water.
Estimation of Students' Chemistry Ability Based on Dichotomous and Polytomous Data Kriswantoro, Kriswantoro; Wulandari, Lucya; AJ, Suharli
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v10i1.31224

Abstract

This research aims to evaluate the quality of an instrument used to measure the chemistry proficiency of senior high school students in Yogyakarta city in response to high order thinking test questions. The evaluation employs the item response theory (IRT) approach, which considers both dichotomous and polytomous data types. The assessment involved analyzing three fundamental assumptions: unidimensionality, local independence, and invariance. The unidimensionality assumption was examined through factor analysis, revealing that the first factor contributed the most to both dichotomous and polytomous data. Local independence was tested using variance-covariance matrix analysis, which revealed that the covariance values between ability intervals were minimal or nearly zero, thereby fulfilling this assumption. Furthermore, invariance testing was conducted on both item parameters and student ability parameters. The results indicated a high correlation (0.893) for item parameters and a moderate correlation (0.761) for ability parameters, confirming that the invariance assumption was satisfied. The students’ ability levels were categorized into five levels, ranging from very low to very high. The analysis revealed that dichotomous data covered a broader range of abilities than polytomous data did. Overall, the study confirms that the instrument used is valid, reliable, and aligns with the core assumptions of IRT. These findings have significant implications for enhancing the quality of chemistry assessment tools using the IRT approach, ensuring that test questions are more accurate and dependable. These insights can help teachers design instructional methods that promote higher-order thinking skills (HOTSs), encourage the broader application of IRT in assessment, and support data-driven educational policies. Moreover, students gain improved training in analytical thinking and problem solving, leading to a deeper understanding of chemistry.

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