Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Jurnal Pendidikan Kimia (JPKim)

jpk
Website

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

19 20 21 22 23

The implementation of SETS approach towards students achievement on the solubility material based on KKNI Christina Sitepu; Ruth Mayasari Simanjuntak
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

The low students’ achievement, lack of variety of teaching methods on Basic Chemistry, lack of students’ engagement on teaching and learning process, misconception of Chemistry is difficult subject, and the changes of curriculum into KKNI on Industrial Revolution 4.0 that demand for the students are on the level 6 on the output based on the government legislation are the problems that need to be done on this study. This study aimed to find out the students’ achievement and response during the learning process on Basic Chemistry-Solubility and Solubility Product-class by using SETS approach based on KKNI. This is a quasi experiemental study through the distance learning. The technique of collecting the data was documentation and research instruments that consist of course outlines (RPS), students’ activity (observation sheet), and students’ work sheets that describe the activity with SETS method, pretest and post test, and the student’s questionnaire. The results showed that the implementation of SETS approach affects the students achievement thus there is enhancement on students achievement for the control and experimental class for 51.92% and the students response on the methods are 88%. The Concluded that there is an effect of Using SETS to improve student achievement and increasing student responses to learning. Keywords: SETS, KKNI, Ksp, student achievement

Methanol extract from kesambi (Schleichera oleosa (L.) oken) stem bark as a natural antioxidant to increase crude palm oil (CPO) quality Weny J A Musa; Nurhayati Bialangi; Diky Kurniawan; M Amrin Sunardi; Ninik Triayu susparini; Sriwijayanti Sriwijayanti; Boima Situmeang
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

The content of active compounds in methanol extract of kesambi stem bark (Scheleicera oleosa) is known to have good antioxidant activity. Methanol extract of kesambi stem bark contain flavonoid and fenolic compounds. The purpose of this study was to evaluate the methanol extract of kesambi in inhibiting the oxidation of crude palm oil (CPO). In this study, the extraction of kesambi stem bark was carried out with methanol solvent. Antioxidant activity test of methanol extract of kesambi using the DPPH method. The parameters observed were free fatty acids (FFA) values, acids value, and DOBI (Deterioration of Bleachability Index). The used concentration of natural antioxidant were 200; 400; 600; 800 and 1000 ppm. Based on the results of this study, the natural antioxidant of methanol extract of Kesambi stem bark (Schleichera oleosa) can reduce levels of free fatty acid numbers, acid value, and DOBI value. Actioxidant activity methanol extract of kesambi stem bark shown IC50 42.092 ppm. The lowest FFA levels and acid numbers were obtained from samples with addition of 1000 ppm natural antioxidants with free fatty acid (4.1%), acid value (7.7 mg KOH/g) while the DOBI value increased to 1.331. Furthermore, FFA value meets the CPO quality standard, according to SNI-01-2901-2006. Keywords: Crude palm oil, antioxidant, free fatty acid (FFA), acid value

The effectiveness of the four-step jigsaw and jigsaw learning model in improving students' argumentation skills about salt hydrolysis concept Windy Kartika; Asrial Asrial; Muhammad Haris Effendi-Hasibuan
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

One of the learning models that can train students in developing argumentation skills is the jigsaw learning and its modified forms. This study aimed to see the effectiveness of the four-step jigsaw learning and the Jigsaw learning in improving students' argumentation skills about the concept of salt hydrolysis. This study was conducted with 2 classes of 11 grade students of SMAN 7 Kerinci Jambi. Some 53 students in total were purposively recruited and participated in this experiment. Concurrent embedded mixed method with two-group pretest-posttest control group design was used in this study. The results of independent t-test showed that 4SJ was more effective than the Jigsaw class (t= 2.668; p-value = 0.01 < 0.05). It was supported by the n-Gain of 4SJ which was 0.71 and the n-Gain of jigsaw was 0.67. Two factors that influenced the differences in students' argumentation skills were observed; these included the difference in learning duration and the intensiveness in conducting the argumentation debate. Keywords: argumentation ability, four-step jigsaw, jigsaw, salt hydrolysis

Analysis of student scientific literacy using the socio-scientific issues (SSI) approach on reaction rate Juli Yani; Neti Afrianis
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 1 (2022): April
Publisher : Pascasarjana Universitas Negeri Medan

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

Development of e-module based on local wisdom to improve science literacy and reading literacy Legian Setyorini; Sri Haryani; Endang Susilaningsih
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 1 (2022): April
Publisher : Pascasarjana Universitas Negeri Medan

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

Development of chemic media (chemistry comic) based on problem based learning on chemical bond materials for class x students Selly Aprilia Nisa; Meli Sartika Silaban; Saronom Silaban
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 1 (2022): April
Publisher : Pascasarjana Universitas Negeri Medan

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

Study on the thermal properties of the grafted product of maleic anhydride onto clylized natural rubber by using thermogravimetric method M. Said Siregar; Dian Arsita Fitri; Muhammad Iqbal Nusa; Desi Ardilla; Masyura M.D; Asmarasari Nasution; Eddiyanto Eddiyanto
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 1 (2022): April
Publisher : Pascasarjana Universitas Negeri Medan

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

The influence of the LSLC-based GIL learning model on the material of electrolysis cells on the learning outcomes of class XII students of SMA N 5 Padang Rahil Ramadani; Andromeda Andromeda; Yemmi Suriati
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 1 (2022): April
Publisher : Pascasarjana Universitas Negeri Medan

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

Analysis of the needs of teachers and students on the inquiry-flipped classroom model in chemistry lessons Suci Desmarani; Muhammad Rusdi; Haryanto Haryanto; Sugeng Triwahyudi
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 1 (2022): April
Publisher : Pascasarjana Universitas Negeri Medan

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

Analysis of final semester assessment questions (PAS) in grade XI chemistry online learning based on cognitive domain level of revised Bloom's taxonomy Tika Reformatika Fuadi; Evi Sapinatul Bahriah; Salamah Agung
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 1 (2022): April
Publisher : Pascasarjana Universitas Negeri Medan

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

Page 21 of 36 | Total Record : 352

19 20 21 22 23

Filter by Year

2014 2024

Filter By Issues

All Issue Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024 Vol. 16 No. 2 (2024): August Vol. 16 No. 1 (2024): April Vol 15, No 3 (2023): December Vol 15, No 2 (2023): August Vol 15, No 1 (2023): April Vol 14, No 3 (2022): December Vol 14, No 2 (2022): August Vol 14, No 1 (2022): April Vol 13, No 3 (2021): December Vol 13, No 2 (2021): August Vol 13, No 1 (2021): April Vol 12, No 3 (2020): December Vol 12, No 2 (2020): August Vol 12, No 1 (2020): April Vol 11, No 3 (2019): December Vol 11, No 2 (2019): August Vol 11, No 1 (2019): April Vol 10, No 3 (2018): December Vol 10, No 2 (2018): August Vol 10, No 1 (2018): April Vol 9, No 3 (2017): Desember Vol 9, No 2 (2017): Agustus Vol 9, No 1 (2017): April Vol 8, No 3 (2016): Desember Vol 8, No 2 (2016): Agustus Vol 8, No 1 (2016): April Vol 7, No 3 (2015): Desember Vol 7, No 2 (2015): Agustus Vol 7, No 1 (2015): April Vol 6, No 3 (2014): Desember Vol 6, No 2 (2014): Agustus Vol 6, No 1 (2014): April More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
jpkim.pps@unimed.ac.id

Editorial Address
Jl. William Iskandar Psr. V Medan Estate, Medan-Indonesia

Location
Kota medan,

Sumatera utara

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official jpkim.pps@unimed.ac.id

Editorial Address Jl. William Iskandar Psr. V Medan Estate, Medan-Indonesia

Location Kota medan, Sumatera utara INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
jpkim.pps@unimed.ac.id

Editorial Address
Jl. William Iskandar Psr. V Medan Estate, Medan-Indonesia

Location
Kota medan,

Sumatera utara

INDONESIA