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Jurnal Pendidikan Kimia (JPKim)

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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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Hubungan C-Reaktif Protein dan Kondisi Udara Tercemar PM10 Dengan Lama Menetap Lansia (Studi Kasus di Kelurahan Kampung Lalang Kota Medan Tahun 2013) Sumihar Pasaribu; Hidayati Hidayati; Syafruddin Ilyas
Jurnal Pendidikan Kimia (JPKim) Vol 7, No 3 (2015): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. The decrease in air quality has long been a public health problem, particularly in the industrialized countries that has many factories and motor vehicles. The high level of air pollution in the city will affect human health in the city, and will ultimately reduce the quality of human life. The Medan city air quality periods 2011-2012 recorded data show that at Terminal Pinang Baris passed the quality standard of 150 μg/m3 for PM10 according to national standar in PP.No.41 1999. There is still plenty of evidence of the extent to which exposure to particulate matter is associated with changes in the level of systemic inflammation in the general population in the city of Medan. Exposure to air pollution is associated with increased levels of C-Reactive Protein (CRP) is believed to trigger systemic inflammation. Particle Matter (PM10) is the pollutant in the air resulting from the activity of motor vehicles, has a relationship with an increase in C-Reactive Protein. Ultimately will lead to various diseases in humans at all age levels. In cross-sectional study was conducted on 50 elderly volunteers who have been residing more than 3 years and close to the center of the air pollution in the this location. After obtaining approval from the ethics committee, then covers anamneses examination, physical examination and venous blood samples for CRP concentrations examined in the laboratory. Research result show that there are relationship between long-time resident with increasing concentrations of CRP for the elderly with statistical chi-square test and Fischer exact test. It is implies that this case enhancement factors for coronary heart disease risk in elderly residing in the study area. Keywords: CRP, long-time resident, PM10, elderly

Effectiveness of use of online games kahoot! chemical to improve student learning motivation Leony Sanga Lamsari Purba; Elferida Sormin; Nelius Harefa; Sumiyati Sumiyati
Jurnal Pendidikan Kimia (JPKim) Vol 11, No 2 (2019): August
Publisher : Pascasarjana Universitas Negeri Medan

Qualitative descriptive study quasi-experimental method is intended to determine the effectiveness of using online games Kahoot! to increase student motivation to learn chemistry. The population in this study were all students of class X private secondary schools (SMAs) Pusaka 1 Jakarta. The sample was selected by random sampling technique, the entire class X MIA 1 with the number of 40 students. The results showed the use of online games Kahoot! effective to increase student motivation to learn chemistry. Increased motivation to learn by using the test gain with the gain of 0.73 with the interpretation of the increase motivation to learn the high category. All the indicators of motivation to learn, which has the intention to succeed in learning, to feel the need to be learned, have ideals, appreciate the lessons and study give a percentage increase motivation to learn different. The most significant increase occurred in the indicator have a desire to succeed in learning, with high gain values, namely 0.82. The lowest increase occurred in the indicator value learning, the value of the gain medium, which is 0.70. Thus, the use of online games Kahoot! help improve students' motivation to learn chemistry when applied to learning. Kahoot! use of online games! help improve students' motivation to learn chemistry when applied to learning. Kahoot! use of online games! help improve students' motivation to learn chemistry when applied to learning.Keywords:Chemical; industry 4.0; kahoot!; learning; media; motivation

Chemical Analysis of Effectiveness of Integrated Practicum Learning in Class XII-IPA SMA on The Implementation of Curriculum 2013 in Medan Bajoka Nainggolan
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 2 (2016): Agustus
Publisher : Pascasarjana Universitas Negeri Medan

Abstract, Execution learning integrated chemical lab on the implementation of the curriculum in 2013 focused on the development of the balance of the ability to form good human (soft skills), with life skills appropriately (hardskills) on the competence of the knowledge, skills, and spiritual attitudes through learning is planned and effective, do scientific approach (scientific approach), through the competence of attitudes, knowledge, and skills to observe, ask questions, reason, analyze, innovate and communicate appropriately and effectively. The effectiveness of the implementation of the integrated chemical lab learning is defined as the thoroughness and success achieved after the implementation of learning. For it to do research with the aim to find out how the effectiveness of the integrated chemical lab learning in class XII-IPA on curriculum implementation in 2013 in SMA Medan in 2016. Samples were taken from the population as much as 5 purposiv chemistry teacher class XII-Science, 15th graders XII-IPA, and laboratory 5 of 5 SMA. Data obtained through questionnaires, interviews, and observations based on the frequency distribution persentatif processed and analyzed descriptively qualitative. The results of the questionnaire obtained a majority (60%) and chemistry teacher (66.67%) students less effective category. The results of the interview (60%) chemistry teacher, (53.33%) sisiwa, and (80%) laboratory majority of categories less effective in teaching practices integrated chemical lab. Results observation documentation, laboratory facilities and infrastructure gained less support and less effective category. Of the 10 topics that should be practiced practicum students, the results obtained; two high schools implement complete practicum title 5 (50%), a high school title completed executing 3 (30%), and two high schools did not carry out a practicum (completeness 0%). From the results it can be concluded that the implementation of the integrated chemical lab learning in class XII IPA SMA-on curriculum implementation in 2013 in the city of Medan category less effective.Keywords: effectiveness, implementation of integrated chemical lab learning, curriculum 2013

Development of electronic student worksheets based on toulmin argumentation patterns to improve argumentation skills in basic acid materials Esa Witri; Ngatijo Ngatijo; Muhammad Haris Effendi-Hasibuan
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 3 (2020): December
Publisher : Pascasarjana Universitas Negeri Medan

This research is part of a research project to help improve students' argumentative skills in chemistry subjects. This research is part of the development of argumentation-based teaching materials while other studies have developed learning models, teaching materials and a collection of argumentation questions. The purpose of this research was to determine the process of developing students' e-worksheets, the feasibility of students' e-worksheets based on concept and practitioner perceptions, and the effectiveness of students' e-worksheets that were developed as teaching materials based on the Toulmin argumentation pattern. Product trials were conducted at state senior high schools 11 Jambi City. The results of the practitioner's eligibility based on the teacher's response are in the very good category and students from both groups have a correlation in the "high" category. The effectiveness test is seen from the average N-Gain score of the experimental class in the quite effective category. There is a significant difference between the experimental class and the control class which can be seen from the difference in learning outcomes of the experimental class (using students' e-LKS based on the Toulmin argumentation pattern) higher than the control class (not using e-LKS).Keywords: Acid-base, E-student worksheet, Toulmin's argumentation pattern

ANALISIS KADAR MERKURI (Hg) DALAM URIN PENAMBANG EMAS TRADISIONAL (Studi Kasus di Desa Panton Luas Kecamatan Sawang Tapak Tuan, Aceh) Harianto Bangun; Gusbakti Rusip; Zul Alfian
Jurnal Pendidikan Kimia (JPKim) Vol 7, No 1 (2015): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract Mercury (Hg) can be exposed to the traditional gold miners during the screening process and annealed. In the filtering process of mercury (Hg) into the body through the skin. And in the process of annealed mercury (Hg) is heated at very high temperatures so that the mercury (Hg) will evaporate and enter the body through inhalation miners. This study aims to determine the amount of mercury (Hg) in the urine of traditional gold miners in the village of Panton Luas subdistrict sawwang southern Aceh district. This study was an observational study with a descriptive design. Sample of 30 people. Collecting data through laboratory tests and questionnaires and analyzed descriptively and analysis uniariat. The results showed that the levels of mercury (Hg) in the urine of gold miners still in the normal range is 4μg / l, an average of 2.82 (SD ± 0.57). Although still within normal limits need to do further research with a more representative sample so that the results will be more accurate. Kata kunci : Kadar Merkuri (Hg), Urin, Penambang Emas Tradisional

Mechanism Study of the Glycerol Oligomerization Reaction using Ab Initio Method Muhammad Yusuf
Jurnal Pendidikan Kimia (JPKim) Vol 9, No 1 (2017): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract: The mechanism study of the glycerol oligomerization reaction was performed to obtain the most possible diglycerol product based on its optimized energy. The mechanism study of the glycerol oligomerization reaction has been investigated regarding to SN2 type route with using HyperChem computer software, ab initio method, and 6-31G* basis set for all atom. Based on the computational calculation results, the energy level of the interaction between base catalyst (NaOH) with glycerol was similar in the α or β-anionic glycerol position (529.38kJ/mol). These results indicate the interaction of base catalyst (NaOH) with glycerol in the α or β-anionic glycerol position shows same possibility energetically favored. However, based on the computational calculation of diglycerol product, αα’-linear diglycerol more possible formed than αβ-branched diglycerol and ββ’-branched diglycerol due to its lowest energy (-0.19 kJ/mol). These results show that the fast attack of polarized glycerol to a carbon of a second glycerol will easier develop when the product is a αα'-linear diglycerol. The next step is formation of linear triglycerol from αα'-linear diglycerol which the difference of energy with glycerol is 6.83 kJ/mol. Keywords: ab initio, diglycerol, HyperChem, oligomerization

Kajian Ekspresi Gen Pretrombin-2 Manusia Sintetik pada Escherichia coli Secara In Silico Untuk Produksi Trombin Sebagai Komponen Lem Fibrin Saronom Silaban; Iman Permana Maksum; Sutarya Enus; Khomaini Hasan; Toto Subroto; Soetijoso Soemitro
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 1 (2016): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstrak. Pretrombin-2 merupakan prekursor trombin dan dapat berperan sebagai komponen lem fibrin (LF). LF merupakan biomaterial perekat yang dapat diaplikasikan sebagai pengganti teknik jahitan pasca operasi. Biomaterial ini terdiri dari trombin, fibrinogen dan faktor XIII sebagai komponen utamanya. Dalam LF, trombin rekombinan berperan sebagai enzim yang mengubah fibrinogen menjadi fibrin untuk membentuk benang-benang fibrin sehingga luka tertutup. Kajian ini bertujuan untuk memprediksi ekspresi gen pretrombin-2 (PT2) manusia sintetik pada Escherichia coli secara in silico. Urutan asam amino pretrombin-2 manusia yang diperoleh dari data GeneBank dirubah ke dalam bentuk wild type urutan nukleotida menggunakan software OPTIMIZER sesuai dengan kodon preferensi E. coli K12, Selanjutnya dianalisis dengan Graphical Codon Usage Analyzer dan dioptimasi secara menual berdasarkan preferensi kodon E. coli dari data Codon Usage Database. Untuk memprediksi tingkat ekspresinya pada inang E. coli, dipelajari kajian ekspresi PT2 secara in silico menggunakan perangkat lunak dalam jaringan OptimumGeneTM. Hasil analisis secara in silico urutan nukleotida PT2 hasil optimasi dan wild type terhadap kodon preferensi E. coli menunjukkan bahwa, persentase rata-rata kandungan GC hasil optimasi sebesar 54,71% sedangkan wild type 52,56%, PT2 hasil optimasi memiliki 100% kodon dengan frekuensi tinggi, sedangkan wild type hanya 67%, dan PT2 hasil optimasi memiliki nilai Codon Adaptasi Index satu, sedangkan wild type hanya 0,89. Dengan demikian dapat diprediksi bahwa gen pretrombin-2 manusia sintetik kemungkinan akan diekspresikan tinggi di inang E. coli. Kata kunci: pretrombin-2, trombin, kodon preferensi, kajian ekspresi, E. coli

The differences of chemical learning outcomes using students work sheet and question cards with NHT type of cooperative models in salt hydrolysis Gelis Juliandini; Zainuddin Muchtar
Jurnal Pendidikan Kimia (JPKim) Vol 10, No 3 (2018): December
Publisher : Pascasarjana Universitas Negeri Medan

This study aimed to determine the differences in chemistry learning results by Numbered Heads Together (NHT) type of cooperative model. This model used student worksheet media compared to question card media on salt hydrolysis. The results shown that there were differences in the learning outcomes in SMA N 1 Perbaungan 2016/2017. The analysis data shown for the gain value in the first experiment class reached 73.19% and the second experiment class 67.57%. The data processing obtained the average value of pre-test and post-test in the first experiment class (33.78) and (82.42) respectively. In the second experiment class cheieved the average value of pretest (33.48) and posttest (78.48). The difference in increasing learning outcomes achieved 5.62%.Keywords:learning outcomes; learning media; numbered heads together; salt hydrolysis

The effect of guided inquiri based chemistry teaching module on students independent learning attitude: An experimental study on the characteristics of colligative solution teaching material Leony Sanga Lamsari Purba
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 1 (2020): April
Publisher : Pascasarjana Universitas Negeri Medan

The purpose of this study was to work out the effect of the employment of chemistry learning modules based of colligative nature of the answer to boost of scholars independent learning attitudes. Population of this study was senior high school School PSKD 7 Depok by purposive sampling tecnique which was class XII with thirty students. Design of this study is one group pre non tes post non test group experiment. Data collection tecniques with questionnaries of 20 statement items and likert scale option. In processing data used the SPSS programs. The results of t paired test concluded that value of t count is bigger than the worth of t Table (-18.83> -23.80). Furthermore, it's also known that the importance value or post-nontest probability value (p-value) of 0,000 is smaller than 0.05 (0.000<0.05). It means there is effect of the use of chemistry learning modules based of colligative nature of the solution to improve of students independent learning attitudes. Based on the gain test to increase of students independent learning attitudes is in the high category, namely 0.82. Thus Guided Inquiri Based Chemistry Teaching Module are needed in learning nature of colligative solution. Keywords: Module; guided inquiri; learning

PENGARUH MEDIA e-LEARNING BERBASIS WEBLOG PADA PEMBELAJARAN MODEL KOOPERATIF TIPE TPS (THINK PAIR SHARE) TERHADAP HASIL BELAJAR KIMIA SISWA PADA POKOK BAHASAN STRUKTUR ATOM DAN SISTEM PERIODIK UNSUR Anna Juniar; Ika Trisna Br Karo S; Hafni Indriati Nasution; Nurmalis Nurmalis
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract This research was purposed to look at the influence of e-learning based weblog implementation toward the increasing of student’s achievement on subject of atom structure and periodict unsure system. The population of research was all students of XI IPA SMAN 3 Medan which consisted of 9 classes with total of 414 students. By using random sample, 2 classes with total of 80 students was used as sample such that gotten class of 1st experiment was e-learning based weblog with instructional model of TPS cooperative type and class of 2nd experiment was not e-learning based weblog with instructional model of TPS cooperative type. The percentage of student’s achievement was increasing by using e-learning based weblog toward the teaching and learning with instructional model of TPS cooperative type was 77.920% and without it was 66.200%. By using data analysis, t-statistics was 6.267 than t-table was 1.994 where α = 0.05 and dk = 78 such that t-statistics > t-table. So, Ha was accepted and could be concluded that student’s achievement by using e-learning based weblog implementation using instructional model of TPS cooperative type was higher than the student’s achievement without it. Kata Kunci : e-Learning, Weblog, Think Pair Share (TPS)

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INDONESIA