Jurnal Pendidikan Kimia

Journal Information
ISSN / EISSN : 2085-3653 / 2549-3116
Published by: State University of Medan (10.24114)
Total articles ≅ 114
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Rahil Ramadani, Andromeda Andromeda, Yemmi Suriati
Jurnal Pendidikan Kimia, Volume 14, pp 47-52; https://doi.org/10.24114/jpkim.v14i1.33764

Abstract:
This research is motivated by the not optimal learning model used by educators. To overcome this problem, a Lesson Study for Learning Community (LSLC) is implemented, there are 3 stages (Plan, Do and See) in one cycle. The role of the observer in the LSLC will have an impact on increasing the competence of educators, which will affect the learning process and increase student learning outcomes. The purpose of the study was to determine the effect of the LSLC-based Guided Inquiry Learning Model on the Electrolysis Cell material on the learning outcomes of class XII students of SMA N 5 Padang. The type of research is Quasi Experiment with Pretest-Posttest Control Group Design. The study population was class XII students of SMA N 5 Padang and samples of class XII MIPA 1 and XII MIPA 3. Data were analyzed using the N-gain test, normality test, homogeneity test, and hypothesis testing (t-test). Based on the results of the study, the influence of the LSLC-based Guided Inquiry Learning (GIL) learning model, the results of the N-gain value analysis (g = 0.63) stated that the LSLC-based GIL learning model had moderate criteria. This shows that the LSLC-based GIL learning model is effective in improving student learning outcomes. This is evidenced by the increase in learning outcomes by 32.97%, the sample data is normally distributed, the two research samples are homogeneous, the hypothesis test is obtained tcount (2.04) and ttable (1.994), it can be concluded that Ho is rejected because tcount is greater than ttable. Keywords: Electrolysis cells, GIL, LSLC, Learning Outcomes
Alfi Rizkina Lubis, Ajat Sudrajat, Asep Wahyu Nugraha
Jurnal Pendidikan Kimia, Volume 14, pp 63-69; https://doi.org/10.24114/jpkim.v14i1.31382

Abstract:
This study aims to determine the results of the analysis of instrumentation requirements, the feasibility category of the Higher Order Thinking Skills an assessment instrument in terms of an expert validation. The research and the development model applied is 4-D (four-D) model. The trial design consisted of content validation tests by experts and analyzed by Aiken's formula. The assessment instrument obtained 37 items that are suitable for use, which means the assessment instrument has met the content validity by the expert judgment which has been analyzed using Aiken's V of 0.85, which means that all items are valid. Keywords: 4D model, HOTS, Instrument, Rasch model, Salt hydrolysis
Tika Reformatika Fuadi, Evi Sapinatul Bahriah, Salamah Agung
Jurnal Pendidikan Kimia, Volume 14, pp 53-62; https://doi.org/10.24114/jpkim.v14i1.30847

Abstract:
This study aims to determine the distribution of cognitive domain levels from Final Semester Assessment (PAS) questions in online learning chemistry grade XI based on the cognitive domain of Revised Bloom's Taxonomy. The method used is descriptive method with the instrument in the form of a check-list format. The object of this research is the question of PAS chemistry grade XI even semester in four schools in South Tangerang City. The data were obtained through analysis of the cognitive domain level of Revised Bloom's Taxonomy on each item and validated through triangulation techniques by two experts in the field of chemistry. The results showed each of the percentages for the C1 domain is 24.3%, the C2 domain is 32.9%, the C3 domain is 32.1%, the C4 domain is 10.7%, and the C5 and C6 domain are both 0%. This show that the distribution of cognitive domains on the chemistry PAS questions for grade XI was not evenly distributed, PAS questions were distributed in four domains out of a total of six cognitive domains, C1, C2, C3, and C4. There are no questions in the cognitive domains of C5 and C6. Keywords: Chemistry online learning, Final semester assessment, Question analysis, Revised Bloom’s taxonomy
Legian Setyorini, Sri Haryani, Endang Susilaningsih
Jurnal Pendidikan Kimia, Volume 14, pp 28-38; https://doi.org/10.24114/jpkim.v14i1.32948

Abstract:
This research is motivated by (1) the results of reading literacy and science literacy in PISA, which is still low, and (2) technology and cultural-based learning media have not been developed by private high school chemistry teachers in Semarang. This research aims to develop a feasible E-module based on the local wisdom of spice drinks that can improve reading literacy and learners' science literacy. This research is a research and development with a 3-D model, which includes defining, designing, and developing. This study collects data through observation, questionnaires, and testing. The research instruments used are material expert validation sheets, multimedia expert validation, observation sheets, and instruments about reasoned multiple choice. The study subject was eight students of XI MIPA Kebon Dalem high school. Expert validation results of the material showed 92.85% (very valid). The validation results of media experts showed 85.71% (valid). E-modules are declared effective because there is an increase in the completion of learners' learning outcomes after using E-modules. E-Module based on local wisdom of spice drinks can visualize the factors that affect the rate of reaction material. So, it can be concluded that E-modules based on local wisdom spice drinks developed are worth using to improve learners' reading and science literacy. Keywords: E-module, Local wisdom, Reading literacy, Spice drinks, Science literacy
Suci Desmarani, Muhammad Rusdi, Haryanto Haryanto, Sugeng Triwahyudi
Jurnal Pendidikan Kimia, Volume 14, pp 9-18; https://doi.org/10.24114/jpkim.v14i1.33306

Abstract:
This study was conducted with the aim of looking at how the general description of student characteristics, material analysis, infrastructure, and problems in chemistry learning were used to support research on the use of inquiry based - flipped classroom E-LKPD in order to maximize the teacher's efforts to improve creative and self -thinking skills student efficacy. This research is a quantitative descriptive analysis research. data collection using interview and observation techniques. Interviews were conducted with teachers of chemistry subjects. The sample of students was taken by random sampling. The research subjects were 47 state high school students in Jambi City. The results showed that 78.7% of students had difficulty understanding chemistry lessons, and 61.7% of students had difficulty understanding chemical concepts, and 51.1% of students had difficulty understanding chemistry questions. The results of the study also said that 97.9% of students needed learning multimedia (e-LKPD). Based on the results of the study, it can be concluded that the inquiry-flipped Classroom model assisted by e-LKPD can be used as a solution to meet the needs of students and teachers, because this learning model is oriented towards student activity and uses technology in the learning process. Keywords: Chemical bond, Flipped classroom, Inquiry, Self efficacy, 21st century learning
M. Said Siregar, Dian Arsita Fitri, Muhammad Iqbal Nusa, Desi Ardilla, Masyura M.D, Asmarasari Nasution, Eddiyanto Eddiyanto
Jurnal Pendidikan Kimia, Volume 14, pp 1-8; https://doi.org/10.24114/jpkim.v14i1.31799

Abstract:
This study aims to investigate the thermal properties of grafted products of maleic anhydride onto cyclized natural rubber. The grafting was carried out in the melt phase at an internal mixer of 150 oC and a rotor speed of 80 rpm. A total of 16 phr maleic anhydride was reacted with cyclized natural rubber in the present and absence of divinylbenzene comonomer with various mole ratios: 0.5, 1, and 2. The grafted products were characterized by the thermogravimetric method to investigate their thermal properties. Based on the results of the thermogravimetric analysis, it was shown that the sample increased its thermal stability. The sample decomposes at a higher temperature with the increasing mole ratio of divinylbenzene added. The grafted product with 16 phr maleic anhydride decomposed at 489.41 oC. Then, the graft product samples with the addition of 0.5, 1, and the 2-mole ratio of divinylbenzene comonomers decomposed at: 501.62 oC, 514.39 oC, and 520.82 oC, respectively. Keywords: Cyclized natural rubber, Divinylbenzene, Maleic anhydride, Thermamogravimetric
Juli Yani, Neti Afrianis
Jurnal Pendidikan Kimia, Volume 14, pp 19-27; https://doi.org/10.24114/jpkim.v14i1.32665

Abstract:
This research at analyzing and knowing student science literacy after using Socio-Scientific Issues (SSI) approach on Reaction Rate lesson at the eleventh grade of MIPA 1 of State Senior High School 4 North Tambusai, Rokan Hulu. This research was conducted in the first semester in the Academic Year of 2019/2020. It was quantitative descriptive research. A purposive sampling technique was used in this research, and the samples were 32 students. The instrument was an essay test and it was supported by an unstructured interview. The data obtained then were analyzed descriptively. The results of analyzing the data showed, based on the data of essay test results, mean percentages of scientific literacy indicators: implementing the appropriate knowledge was 66.01% (good), identifying was 69.21% (good), explaining the implications of scientific knowledge for society was 80.94% (good), proposing ways to investigate scientific questions was 54.68% (enough), and drawing the right conclusion was 75.78% (good). It could be concluded that the achievement of student scientific literacy skills on the aspects of science competencies of Reaction Rate lesson at the eleventh grade of MIPA 1 overall was on good category. Keywords: Reaction Rate, Socio-scientific Issues approach, Student scientific literacy
Selly Aprilia Nisa, Meli Sartika Silaban, Saronom Silaban
Jurnal Pendidikan Kimia, Volume 14, pp 39-46; https://doi.org/10.24114/jpkim.v14i1.32112

Abstract:
This research is a development research that aims to determine the feasibility of chemic media based on problem based learning on chemical bonding material for class X students based on BSNP standards. In this research, a modified ADDIE development model was used where only the analysis, design, development and evaluation stages were carried out. This research will be conducted at the Department of Chemistry State University of Medan, SMAN 1 Secanggang and SMAS Bintang Langkat. The feasibility of the media is seen through a feasibility questionnaire based on the BSNP standard with a Likert scale of 1 to 5. The validity of the chemic media is obtained from the results of the validation of lecturers and teachers, while the respondents' assessment of chemic media is obtained from the results of the assessments of teachers, students, and students. The results obtained indicate that the chemical media developed is valid or feasible to use. This can be seen from the validation data in terms of content, presentation feasibility, language feasibility, graphic feasibility and problem based learning assessment, respectively, obtaining a percentage of 80.83%; 82.50%; 94.38%; 82.19% and 82.14% so that an average percentage of 82.00% is obtained which is included in the very high category. The results of respondents' assessments of chemic media were reviewed based on aspects of appearance, material and benefits which respectively obtained a percentage of 88.96%; 86.73%; and 86.67% with an average percentage of 87.6% which is included in the very high category. Keywords: ADDIE model, Chemic media, Chemical bonding, Problem based learning
Julianse Lydia Nababan, Titin Evania Manalu, Ratu Nurul Aulia, Anna Lestari, Angga Koswara Malau, Murniaty Simorangkir
Jurnal Pendidikan Kimia, Volume 13, pp 202-211; https://doi.org/10.24114/jpkim.v13i3.29077

Abstract:
The spread of the COVID-19 virus has shaken the world. The application of Clean and Healthy Living Behavior (CHLB) is the best effort to prevent the transmission of the Covid-19 virus. Maintaining oral and dental hygiene can improve health, especially during the COVID-19 pandemic. Sarang Banua (Clerodendrum fragrans Vent Willd) is a local plant of North Sumatra, containing secondary metabolites of alkaloids, steroids, flavonoids, triterpenoids, saponins, tannins, and quinones that have bioactivity such as antibacterial and antioxidant. The preparation of Sarang Banua mouthwash (SABANA) made from the extract of the sarang banua leaves with a concentration of 0.5 grams in 100 ml of preparation (0.5%) has been formulated, evaluated by organoleptic, pH and antibacterial test. The results of organoleptic and pH tests showed that SABANA mouthwash preparations were brown and slightly cloudy, tasted very distinctive, fresh, and eliminated bad breath with a pH of 7 in accordance with quality standards. About 70% of the panelists stated that they really liked the color, aroma, taste and appearance of SABANA mouthwash preparations. The results of antibacterial test against the oral bacteria Streptococcus mutans ATCC (25175) showed that 0.5% and 0.75% of the oral antibacterial mouthwash was found to be effective as oral antibacterial with an average inhibition zone diameter of 16.55 and 16.9 mm. Through the activities of the Student Creativity-Entrepreneurship Program, SABANA mouthwash have been produced and marketed in the local as well as outside the city by online and offline-shop and have the opportunity to develop into a new entrepreneur.
Hamidatun Nisa, Fathia Namira, Jasmidi Jasmidi, Ajat Sudrajat, Tita Juwitaningsih
Jurnal Pendidikan Kimia, Volume 13, pp 212-222; https://doi.org/10.24114/jpkim.v13i3.29104

Abstract:
Education in Indonesia since middle-March 2020 has undergone significant changes. Online learning to answer questions is a solution to the virus problem that has spread to cut cases of the Covid-19 virus using online media. Edmodo is a learning application that the application can use in bold type learning, including atomic structure material. This study analyzes the Edmodo-based understanding used for learning media on atomic structure material and how students respond to the Edmodo application in chemistry learning, especially atomic structure material. The research method used is descriptive qualitative. The results showed that the effectiveness of learning was 69%, application sustainability during the pandemic was 76%, ease of access was 97%, ease of communication was 61%, the clear assessment was 84%, and understanding of the material Edmodo was 59%. Implementing chemistry learning consists of (1) choosing Edmodo as a bold learning medium in chemistry learning based on analyzing student needs with reasoning and mastery of applications; (2) planning the application as a student learning medium as described in the Semester Learning Plan; (3) implementation in Edmodo-based online learning is carried out well and smoothly based on semester learning plan; and (4) edmodo as an application can help carry out chemistry learning in atomic structure subjects to measure student learning outcomes. So it can be concluded that Edmodo is a practical application to use during the Pandemic of Covid-19.
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