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Jurnal Pendidikan Kimia (JPKim)
Published by Universitas Negeri Medan
ISSN : 20853653     EISSN : 25493116     DOI : 10.24114
Core Subject : Science, Education, Social,
Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science
Jurnal Pendidikan Kimia (JPKim) yang dikelola Program Pascasarjana Universitas Negeri Medan terbit 3 kali setahun, yakni bulan April, Agustus dan Desember. JPKim menerbitkan artikel ilmiah hasil-hasil penelitian pendidikan kimia dan kimia fundamental. JPKim juga menerbitkan artikel Review terkait Pendidikan Kimia dan Kimia.
Arjuna Subject : -
Articles 352 Documents
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Enhancing students’ scientific attitudes with a problem-based learning model integrated green chemistry Sarmila Eka Putri; Nurfina Aznam
Jurnal Pendidikan Kimia Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i3.65173

Abstract

Enhancing scientific attitudes through education by incorporating green chemistry principles is essential, so that students can explore new ideas and information about chemistry concepts while considering environmental sustainability. This has the potential to change chemistry learning to be more meaningful. This study aims to determine the influence of the problem-based learning (PBL) model integrated with green chemistry on students' scientific attitudes. This research is a quasi experiment research with pretest-posttest control group design. The participants were XI MIPA class students who were randomly selected. The data collection method used scientific attitude questionnaire as an instrument. Data analysis includes n-gain test and hypothesis testing using t test. The results showed a sig value of 0.000 (0.000 < 0.05) and tcount of 5.136 (tcount > ttable). This indicates that there is a significant difference in scientific attitudes between students who follow the PBL-green chemistry learning model and students who follow learning with a scientific approach. The existence of this difference indicates that the PBL-green chemistry model has a positive influence in improving students' scientific attitudes.
AI-based assessment: Aiken index analysis of content validity in scientific literacy instruments on the basic laws of chemistry with ethnochemistry Fila Delfia Zai; Sri Yamtinah; Ari Syahidul Shidiq; Hayuni Retno Widarti; Antuni Wiyarsi
Jurnal Pendidikan Kimia Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i3.65174

Abstract

Scientific Literacy Assessment (SLA) is used to measure science literacy on basic chemical law material that has been qualified and tested. This study aims to prove the content validity of ethnochemistry SLA instruments integrated with artificial intelligence (AI) systems using Aiken's validity index so that they can measure students' scientific literacy in basic chemical law material. The research design uses the ADDIE development model (Analysis, design, development, implementation and evaluation which is simplified into analysis, design, and development. Content validity data was obtained from 10 experts, namely 7 chemistry education lecturers from UNS, UNY, and UM and 3 chemistry teachers in Surakarta through focus group discussions (FGD). The content validation test is based on aspects of context, language, and construct. A valid instrument is indicated by an Aiken index value of more than or equal to 0.73. The AI-integrated ethnochemistry SLA instrument on basic laws of chemistry material produced 15 valid items with an Aiken index greater than 0.73.
The differentiated STEM approach in problem-based learning: Can it enhance students’ critical thinking skills in basic chemistry laws Karima Majid; Sri Mulyani; Maria Ulfa; Ari Syahidul Shidiq
Jurnal Pendidikan Kimia Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i3.65175

Abstract

The 21st century highlights the critical role of education in developing life skills, including critical thinking, to address rapid global changes. The learning process in schools becomes a critical factor in strengthening these skills. Therefore, this study aims to determine the effect of the Differentiated Problem-Based Learning (PBL) model with the STEM approach on students' critical thinking skills on basic chemical laws in class X of a Senior High School in Surakarta. Samples were selected using cluster random sampling to choose two classes as samples, namely, the experimental and control classes. Research data was collected through a post-test using an essay measuring students' critical thinking skills. The results were analyzed using the Kruskal-Wallis’s test based on the mean post-test scores of the experimental class (73.00) and the control class (64.4), yielding a significance value of 0.004 (< 0.05). These results indicate a positive effect of Differentiated PBL-STEM on students' critical thinking skills. Skilled group students consistently demonstrated critical thinking skills, while students in the intervention and intermediate groups showed improvements from the initial diagnostic results of the learning process.
Implementation of green chemistry approaches in chemistry labs instruction: A systematic literature review Nanda Ayu Lestari; Dewi Sulistyowati; Yohana Dellatiani; Nisrina Zahira Putri Irawan; Anita Fadhilah; Anis Muyassaroh
Jurnal Pendidikan Kimia Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i3.65184

Abstract

In recent years, the urgent need to address environmental problems has driven green chemistry in various disciplines, focusing on designing chemical products and processes that minimize hazardous materials. This research conducted a systematic literature review (SLR) to evaluate the application of green chemistry in higher education chemistry lab practices and its impact on students' conceptual understanding, practical skills, and environmental awareness. Using the PRISMA method, 46 articles were analyzed from the Scopus and ScienceDirect databases extracted from a total of 537 published between 2015 and 2024. The findings show that applying green chemistry in chemistry laboratory learning can improve students' conceptual understanding, practical skills, and environmental awareness while encouraging environmentally friendly synthesis methods. However, challenges such as limited resources and the need for additional training for lecturers still exist. Institutional support and professional development are needed to maximize implementation. In conclusion, green chemistry has great potential to create a more environmentally responsible generation of chemists, with recommendations for comprehensive integration into chemistry curricula and increased support for educators to address implementation challenges. This study provides a basis for expanding the application of green chemistry in chemistry education and preparing students to face future sustainability challenges.
Development of electronic portfolios to assess concept mastery and creative thinking on project-based acid-based concepts Nisa Qurrata Aini; Nahadi Nahadi; Soja Siti Fatimah
Jurnal Pendidikan Kimia Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i3.65188

Abstract

The purpose of the study was to develop an electronic portfolio instrument to assess concept mastery and creative thinking on project-based acid-base materials. The research participants are class XI, who will study acid-base materials. This research uses the 4D Research and Development model which are carried out up to stage 3 (Define, Design, and Development). On the define stage, a literature study, a field survey, material analysis, indicator analysis, and task analysis were conducted. The design stage designed grids and assessment rubrics, the preparation tasks consisting of four: making papers, practicum reports, posters, and concept maps. The design stage compiled an electronic portfolio instrument. The developmental stage conducts quality tests: initial development test, expert validity test obtained a CVR value of 1.00, reliability test with inter-rater obtained a Cronbach Alpha value between 0.652 and 1.000. After the electronic portfolio instrument was valid and reliable, a limited trial was conducted with N-Gain scores of task 1, task 2, task 3, and task 4, respectively: 0.17 (low), 0.13 (low), 0.46 (medium), and 0.32 (medium). The overall average of the pretest and posttest N-Gain scores is 0.90, with a higher category. This electronic portfolio instrument based on Project-Based Learning (PjBL) is expected to help teachers assess tasks on concept mastery and students' creative thinking on acid-based materials.
Development of innovative electronic student worksheet (E-LKPD) based on somatic auditory visual intellectual (SAVI) on salt hydrolysis topic Monica Cahyaning Ratri; Elisabeth Patricia Ito Tina
Jurnal Pendidikan Kimia Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i3.65191

Abstract

A low understanding of salt hydrolysis and a lack of mastery of mathematics in the calculation section is a problem in learning chemistry. Therefore, this research aim is to produce a good electronic student worksheet (E-LKPD) based on SAVI learning model by determining the quality of LKPD in terms of (1) feasibility and (2) student response. This research and development (R&D) used a 4D development model that was modified to 3D. The research instruments used were interview and validation sheets, test items in the E-LKPD, and student response questionnaires. The research sample consisted of 10 students of class XI MIPA. The results showed that (1) the developed E-LKPD has good quality because it met valid criteria with a percentage of 90% in terms of material and 87% in terms of media. The average score of E-LKPD effectiveness is 78 (high criteria), and practically average score of E-LKPD based on students' response questionnaire is 94.4%; (2) students said that E-LKPD can help them learn and the material is exposed clearly (92.5%), can be used for independent study (97.5%), and the design of the E-LKPD is attractive (95%). Based on the research results, SAVI-based innovative E-LKPD can be used in chemistry learning on salt hydrolysis topics.
Oxidized cellulose 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) for Mn(II) adsorption I Putu Mahendra; Venti Finaritan; Dwi Liza Ramadiani; Hiskia Harianja; Khatarina Meldawati Pasaribu
Jurnal Pendidikan Kimia Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i3.65195

Abstract

The presence of excess Mn²⁺ in water can result in unpleasant odors and tastes, and its consumption can lead to neurological disorders in humans. Adsorption using oxidized cellulose is an efficient method for removing Mn²⁺ ions. In this study, cellulose was oxidized using the TEMPO/NaOCl/NaBr system with varying NaOCl concentrations (5, 15, and 30 mmol/g) to identify the optimum conditions for Mn²⁺ adsorption. The carboxyl group content in the oxidized cellulose samples was 0.2393, 0.2435, and 0.2664 mmol/g, respectively. The adsorption efficiencies were 92.40%, 91.71%, and 91.43%, with the highest efficiency observed at 5 mmol/g NaOCl. The decrease in adsorption efficiency at higher NaOCl concentrations was attributed to the oxidation of secondary hydroxyl groups, forming undesirable ketone groups and disrupting the reaction pathway. FTIR analysis confirmed successful oxidation with a new absorption band at 1646 cm⁻¹. XRD analysis showed an increase in the crystalline index to 82.8%, 83.1%, and 83.13% for NaOCl concentrations of 5, 15, and 30 mmol/g, respectively. This study highlights the potential of TEMPO/NaOCl/NaBr-oxidized cellulose as an effective adsorbent for Mn²⁺ removal under optimized conditions.
Scientific, inquiry, and animation integration: The IPSIA learning model in chemistry Rabiyatul Adawiyah Siregar; Sun Theo Constan Lotebulo Ndruru; Armansyah Lubis; Ali Akbar Siregar; Nurhijriyah Kam Siregar
Jurnal Pendidikan Kimia Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i3.65198

Abstract

This study addresses the issue of low active participation among students in chemistry learning, as well as their difficulties in understanding macroscopic, microscopic, and symbolic concepts, which contribute to unsatisfactory learning outcomes. To tackle these challenges and enhance students' performance in chemistry, a valid, practical, and effective IPSIA learning model was developed. The research employed a development approach based on the ADDIE (Analyze, Design, Develop, Implement, and Evaluate) model, beginning with a thorough analysis of the curriculum. This was followed by the design of the IPSIA model, which was validated using a questionnaire instrument. The results of the validity test scored 98, categorizing it as "very good." Additionally, the practical test of the IPSIA model also received a score of 98, indicating that it is user-friendly. During the implementation phase, the effectiveness of the model was assessed through test results. The improvement in students' chemistry learning was evidenced by normalized gain scores: 0.57 for the control class and 0.72 for the experimental class at Senior High School (SMA) 2 Padangsidimpuan, as well as 0.52 for the control class and 0.64 for the experimental class at SMA 5 Padangsidimpuan. These findings demonstrate that the IPSIA learning model is valid, practical, and effective in improving students' chemistry learning outcomes.
The development of enrichment book of chemistry in our body based on augmented reality and its influence on chemistry literacy and scientific attitude of high school student Muhammad Fikri M Basri; Jaslin Ikhsan
Jurnal Pendidikan Kimia Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i3.65200

Abstract

This research aims of this research is to obtain produce enrichment book of chemistry in our body based on augmented reality which can display the 3D shape of molecular shape and chemical bonds developed from macromolecular materials that are suitable for increasing student chemical literacy and scientific attitude. This development research uses a 4D model developed by Thiagarajan which consists of stages Define, Design, Development, and Disseminate. The trial was carried out on 1 limited test class and 2 wide test classes (1 experimental class and 1 control class) of XII Science students at Senior High School of Angkasa Adisutjipto. The results of the research show that: 1) Enrichment book of chemistry in our body based on augmented reality that have been developed have very decent quality by media and materials validators; 2) the practicality response are included in the "Very Good" category with the average score of the percentage of ideals obtained of 88.62%; 3) the students response are included in the "Very Good" category with the average score of the percentage of ideals obtained in the limited trial of 81.21% and extensive trial of 84.39%; 4) the product are effective in increasing students chemical literacy and scientific attitude with the MANOVA test which obtained a significance value of 0.001; 5) the product are effective in improving students' chemical literacy with the MANOVA test which obtained a significance value of 0.006; 6) the product are effective in increasing students' scientific attitudes with the MANOVA test which obtained a significance value of 0.006.
Synthesis of (3E,5E)-1-benzil-3,5 bis (3 (benziloksi)benziliden)piperidin-4-on curcumin analogues and their potential as breast anticancer agents: Assessment using MTT test and molecular docking Astuti, Endang; Kultsum, Jihan Alfiyah; Aulia, Zarah; Rahmawari, Frika; Gurning, Kasta; Triono, Sugeng; Haryadi, Winarto; Pranowo, Harno Dwi
Jurnal Pendidikan Kimia Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i3.65150

Abstract

Breast cancer is a serious disease that occurs in women and contributes to the highest mortality compared to other types of cancer. This study aims to synthesize curcumin analog compounds ((3E,5E)-1-benzyl-3,5 bis (3 (benzyloxy)benzylidene) piperidin-4-one), test them in vitro against various breast cancer cells (T47D, HER-2, MCF-7, and 4T1) and normal cells (vero cells), and study their molecular docking. Synthesis was carried out by reacting 3-benzyloxybenzaldehyde with N-benzyl-4-piperidone catalyzed by 5% KOH at room temperature; in vitro testing was carried out using the Microculture Tetrazolium Technique Assay method, ADMET analysis with an online database server, and molecular docking studies in Autodoc Vina. The synthesis results obtained yellow solid powder with a yield of 65.85%, characterization with TLC gave black fluorescence (Rf 0.63), melting point 114-116oC, TLC scanner one peak (100%), retention time 0.65 minutes, 1H &13C-NMR analysis showed the molecular formula C40H35NO3, moderate activity against 4T1 breast cancer cells and inactivity on T47D, HER-2, and MCF-7 cancer cells, and did not show cytotoxicity to normal cells (vero cells). ADMET predictions from Lipinski's five rules contained two parameters that did not meet, namely molecular weight and log P value. Molecular docking studies were carried out on estrogen receptor protein (ER)-α (PDB ID: 2ERT), which showed a binding affinity energy of -8.7 kcal/mol and -7.1 kcal/mol of the native ligand. Further research and development is needed on synthetic curcumin analog compounds to increase their activity value against breast cancer by paying attention to Lipinski's five rules to obtain compounds with better potential activity and ADMET.

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