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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.

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Articles 352 Documents

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The effect of the flipped classroom approach and self-efficacy on a guided inquiry on students' creative thinking skills Dian Indah Lestari; Muhammad Haris Effendi-Hasibuan; Damris Muhammad
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 2 (2020): August
Publisher : Pascasarjana Universitas Negeri Medan

This study aims to look at the effect of the flipped classroom approach on the guided inquiry model and student's self-efficacy on creative thinking skills on the reaction rate material. The study was conducted in class XI MIA SMA N 3 Jambi City with a 2 x 2 factorial design and the sample consisted of 2 classes chosen randomly. Data collection using test techniques, namely essay tests, includes indicators of creative thinking and non-tests, namely self-efficacy questionnaire data and field notes during the study. Analysis of the data used is 2-way ANOVA. The results showed that guided inquiry learning with the flipped classroom approach and high self-efficacy categories had high creative thinking abilities, but there is no interaction between learning models with self-efficacy towards creative thinking abilities on the reaction rate material because learning models and self-efficacy affect the results of students' creative thinking abilities independently. Based on the results of the study it can be concluded: (1) There is an influence of the flipped classroom approach on the guided inquiry model of students 'creative thinking abilities on the reaction rate material (2) There is an effect of students' self-efficacy on the ability to think creatively on the material reaction rate (3) There was no interaction between the learning model and students' self-efficacy.Keywords: Creative thinking skills, Flipped classroom, Guided inquiry, Reaction rate, Self-efficacy

IKATAN TRANSLOKATOR PROTEIN DARI Rhodobacter sphaeroides DENGAN HEMIN DALAM DDM DAN DPC Nora Susanti
Jurnal Pendidikan Kimia (JPKim) Vol 7, No 1 (2015): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstrak Ikatan antara translokator protein (TSPO) dari Rhodobacter sphaeroides (RsTSPO) dengan hemin dalam dua detergen yang berbeda yaitu n-dodecyl-ß-D-maltoside (DDM) and n-dodecylphosphocholine (DPC) detergents telah diteliti. RsTSPO dipilih sebagai model untuk TSPO mamalia. RsTSPO di tanam dalam E.coli kemudian dieksraksi menggunakan buffer Tris pH 7,5 dan diikuti dengan pemurnian menggunakan Fast Protein Liquid Chromotography (FPLC). Hasil fluoresensi triptofan intrinsik menunjukkan bahwa RsTSPO memiliki afinitas terhadap hemin yang lebih tinggi dalam DDM (Kd = 0.35 µM) dibandingkan DPC (Kd = 0.575 µM) Kata kunci : translokator protein, hemin, fluoresensi, ikatan

The Influence of Practicum Video with Electronic Module Toward Process Skills for Stoichiometry Materials of the Grade X of SMAN 2 Tidore Islands Nur A Limatahu; Nurul Aulia Rahman; St Hayatun Nur Abu; Indra Cipta
Jurnal Pendidikan Kimia (JPKim) Vol 9, No 1 (2017): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract: This study aimed to determine the effect of practicum video with electronics module toward process skills and how far the influence of stoichiometry materials of the grade X of SMA Negeri 2 Tidore Islands. This study used experiment research. The study design was experiment with One Group Pretest-Postest Design. The population was the grade X students of SMAN 2 Tidore Islands. The sample was class X1chosen randomly. Data analysis technique was through statistical descriptive analysis and inferential statistical analysis which used SPSS 16. The results of hypothesis testing showed that sig <0,05 and t count > t table then the use of practicum video and electronic modules influence the process skills of students. Gain value is 85% indicating a high interpretations to the improvement process skills of students. Keywords: process skills, electronics modul, practicum video

Pengembangan Buku Ajar Kimia SMA/MA Kelas XI Semester Genap Terinternalisasi Nilai-Nilai Karakter Siswa Weni Tri Sasmi; Ajat Sudrajat; Iis Siti Jahro
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 1 (2016): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. This study aims to obtain a chemistry text book of SMA/MA Class XI second semester internalized character values of student. Populasi student learning outcomes of this study were (1) all existing chemistry teacher in Kisaran categorized expert teacher and chemistry lecturer of Universitas Negeri Medan in Medan. (2) all eleventh grade students the second semester of school year 2015/2016 SMA Muhammadiyah 8 in Kisaran. The entire sample was selected by purposive sampling. Samples were determined in this study were (1) a chemistry teacher with a minimum of formal education criteria S1 and teaching experience in schools, a chemistry lecturer of Universitas Negeri Medan with the criteria of formal education S2 at least 5 years, is being actively teach and master the basic chemical materials that are relevant to the material high school chemistry (2) Class XI IPA 1 was given treatment using chemical text book SMA/MA Class XI second semester internalized character values of student based on curriculum 2013. Based on test data analysis requirements the results showed that (1) The results of due diligence analysis chemistry textbook that is based on the standard BSNP amounted to 3.69 visits of criterion validity textbook is quite valid but need to be revised (2) based on the opinions of teachers and lecturers to test the feasibility of chemistry textbook produced in research this meets the standards required by the National Education standards in the amount of 4.41 means that valid and do not need to be revised. (3) based on the opinions of teachers and lecturers to test the feasibility of textbook internalized character values of students in this study meet the standards of assessment rubrics of 4.43 categorized character very well. (4) based on the opinions of students to test the feasibility of textbook internalized character values of students in this study meet the standards of assessment rubrics character is of 4.42 which is considered very good. (5) Improved student learning outcomes using chemistry textbook produced in this study were of 0.69 or 69% were categorized as moderate. (6) Based on data obtained learning outcomes sign value <0.05 (0.002 <0.05) the use of high school chemistry textbook / MA class XI internalized second semester student of character values higher than the KKM. Key words: text book , internalized character values of student

The implementation of teaching model to induce simson tarigan's concept change (m3pk) to improve student chemistry learning outcomes in the subject of reaction equation class x man binjai Dwy Puspita Sari; Marini Damanik; Simson Tarigan
Jurnal Pendidikan Kimia (JPKim) Vol 10, No 3 (2018): December
Publisher : Pascasarjana Universitas Negeri Medan

This study aims to determine the improvement of students' chemistry learning outcomes by applying M3PK. The population were all students of class X MIA. The sample consisted of two classes, namely class X MIA 2 and X MIA 3 which were taken by random sampling. The first class is used as an experimental class which is taught using the Teaching Model to Induce Change of Concepts, and the second class as a control class which was learnt by using the Direct Instruction. As a prerequisite for testing the hypothesis, the study data of the two sample groups were tested for normality and homogeneity and the data achieved from both sample groups were normal and homogeneous. In testing, the hypothesis obtained the price of tcount> ttable (4.619> 1.670). It shows that the alternative hypothesis (Ha) is accepted and the null hypothesis (Ho) is rejected, which means that the increase in learning outcomes of chemistry students who are learnt by using M3PK is higher than the learning outcomes of chemistry students who are educated using the Direct Instruction. The percentage increased in students' learning outcomes of chemistry learnt by using M3PK was 74.5% while those taught using the Model Direct Instructionwere 64.8%.Keywords:equation reactions; m3pk; learning outcomes

Teacher performance on students learning outcomes in applied chemistry Marnida Yusfiani
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 1 (2020): April
Publisher : Pascasarjana Universitas Negeri Medan

Teacher performance affect the students’ learning outcomes. End of semester instructional process evaluated by teacher and students. This study aimed to analyze the effect of Pedagogic, Professional, Personality, and Social as Teacher Performance on Students’ Learning Outcome in Applied Chemistry course. The population of this study is student’s took Applied Chemistry course which academic year is: 2017/2018 and 2018/2019 in Polytechnic of Tanjungbalai. The sampling is total sampling. Research method using Partial Least Square – Structural Equation Modelling (PLS – SEM). Questionnaire evaluation in the end of semester as instrument for Teacher Performance and Student’s assessment sheet as instrument for Students’ Learning Outcome. The result showed that there is a direct effect of negative and not significant correlation between Pedagogic and Social Teacher Performance on Students’ Learning Outcome Disclosure and there is a direct effect of positive and not significant between Professional and Personality Teacher Performance on Students’ Learning Outcome Disclosure. Keywords: Teacher performance; Learning outcomes; Applied chemistry; PLS – SEM

PERBAIKAN PEMBELAJARAN KULIAH KIMIA ANORGANIK MELALUI PENGAYAAN DAN PENGGUNAAN ALAT PERAGA PADA PENDEKATAN PEMBELAJARAN KOOPERATIF DENGAN BANTUAN PETA KONSEP Lisnawaty Simatupang; Ratna Sari Dewi
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstrak Telah dilakukan teaching grant perbaikan pembelajaran kuliah Kimia Anorganik melalui pengayaan dan penggunaan alat peraga pada pendekatan pembelajaran kooperatif dengan bantuan peta konsep di Jurusan Kimia FMIPA UNIMED Medan untuk mahasiswa S1 Pendidikan Kimia 2008 B. Penelitian ini bertujuan untuk meningkatkan interaksi dan hasil belajar kuliah rumpun Kimia Anorganik berbasiskan kompetensi dan mengintegrasikan dengan softskill yang diharapkan dalam perkuliahan, memperbaiki interaksi dosen-mahasiswa dan mahasiswa dengan mahasiswa. Penelitian ini dirancang dalam 4 tahapan yakni : Perencanaan perbaikan Silabus, RPP dan kontrak perkuliahan. Pengembangan modul ajar melalui akses internet, Pelaksanaan pembelajaran melalui kaji tindak (Action research) serta monitoring dan evaluasi setiap siklus tindakan yang dilakukan. Perbaikan Silabus, RPP, Kontrak Perkuliahan telah dilakukan dengan pengintegrasian softskill dan penyesuaian model dan metode sehingga dihasilkan satu dokumen. Sedangkan perbaikan instrument test dihasilkan 5 set instrument test sesuai dengan pokok bahasan yang diajarkan dan satu instrument angket. Hasil penelitian ini menunjukkan bahwa kemampuan kognitif meningkat di lihat dari pretest 1 nilai rata-rata 50,76 sampai pretest 5 nilai rata-rata menjadi 65,30, Untuk nilai rata - rata posttest mengalami peningkatan yang signifikan dari posttest 1 61,52 menjadi 85,91 pada posttest ke-5. Persentase jumlah mahasiswa 2008 Dik B yang mampu menyelesaikan mata kuliah kimia Anorganik I sebanyak 87,87%. nilai rata-rata item softskill sebesar 78,86 (Komponen yang muncul : Integritas/kejujuran, Berbicara dengan niat baik, komitmen untuk belajar, tanggungjawab sebagai mahasiswa dan sikap yang luwes dalam mengikuti perkuliahan. Cara berkomunikasi yang baik, teknik meminta maaf bila membuat kekeliruan dan sikap yang membangun ikatan persahabatan, konsentrasi dalam belajar, mengorganisasi dengan pikiran dan membaca cepat, rasa empati sesama mahasiswa, mengeneralisasi contoh dan pendapat serta rasa kemanusiaan). Kata Kunci: Strategi Pembelajaran,Pembelajaran Kooperatif, Peta Konsep, Kemampuan Kognitif, Media Alat peraga

Determination of phenolic contents and antioxidant activity test of ethanol extract of Sirih merah (Piper crocatum Ruiz & Pav.) leaves using the DPPH method Kasta Gurning; Sifikal Lumbangaol; Risanti F. R Situmorang; Saronom Silaban
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 2 (2021): August
Publisher : Pascasarjana Universitas Negeri Medan

The research objectives were to identify the secondary metabolite components, total phenolic content and determine the antioxidant activity of the ethanol extract of red betel leaf (Piper crocatum Ruiz & Pav.). The extraction process was carried out by materation using ethanol as a solvent. Determination of total phenolic content was carried out colorimetrically with Folin-Ciocalteu reagent measured at a maximum wavelength of 765 nm. Determination of antioxidant activity using the DPPH method measured by spectrophotometry at a maximum wavelength of 517 nm. The results of phytochemical screening of the ethanolic extract of red betel leaf contain secondary metabolites, including flavonoid, phenolic, tannin, alkaloids, steroids, and triterpenoids. The total phenolic content of the red betel leaf ethanol extract was 0.949±0.003 mg GAE/g d.w. and has antioxidant activity (IC50) 84,656 including strong category as an antioxidant. Keywords: Piper crocatum Ruiz & Pav., Antioxidant, Ethanol extract, Folin-Ciocalteu and DPPH

PENGEMBANGAN MODEL PROBLEM BASED LEARNING (PBL) TERINTEGRASI INKUIRI TERBIMBING PADA PELAJARAN KIMIA LARUTAN DI SMA KELAS XI UNTUK MENINGKATKAN HASIL BELAJAR KIMIA DAN NILAI KARAKTER Dkmtj SISWA Eka Kartika Silalahi; Ramlan Silaban; Albinus Silalahi
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 2 (2014): Agustus
Publisher : Pascasarjana Universitas Negeri Medan

Abstract This study aims to analyzed (1) The difference of chemical enhancement of learning outcomes of students who were taught significantly between Instrusction Direct (DI) model, Problem Based Learning (PBL) and guided inquiry, and Problem Based Learning (PBL) and guided inquiry with computers, (2) Differences of character Dkmtj students enhancement as significantly were taught using Instrusction Direct (DI) learning model, Problem Based Learning (PBL) and guided inquiry and Problem Based Learning (PBL) and guided inquiry with computers, and (3) the relationship between the character and chemical students outcomes with the learnin towards learning model is applied. This studied was experimental. The population was all students high school of XI class in Pematangsiantar town as 2013/2014 Academic Year. Sampling technique used cluster random sampling, that was SMAN 2, SMAN 3 and SMAN 4 Pematangsiantar respectively 3 classes. The research instrument was studying chemistry test results and observations increased in the value of the character of students. The data analysis technique used the analysis of variance (ANOVA) 1 way (One way ANOVA) with SPSS 20 for windows at significance level α = 0.05. Based on the results of data processing, it was concluded (1) Significantly there were differences in learning outcomes between students who were taught chemistry learning model of Direct Instruction (DI) compared with the model of Problem Based Learning (PBL) as compared with the integrated guided inquiry model of Problem Based Learning (PBL) is integrated guided inquiry using computer. (2) Significantly there were differences of character values of discipline, critical thinking, independent, responsible and honest that was developed between the students who were taught by the learning model of Direct Instruction (DI) compared with the model of Problem Based Learning (PBL) integrated guided inquiry model than the Problem based Learning (PBL) integrated guided inquiry using the computer. (3) Significantly there is a relationship with the learning outcomes of the character values of discipline, critical thinking, independence, accountability and integrity are spreading among the students who are taught by the model of Problem Based Learning (PBL) and the integrated guided inquiry model of Problem Based Learning PBL integrated guided inquiry using a computer. Keywords: Problem Based Learning (PBL), Guided Inquiry and Direct Instrusction (DI)

The optimization of acid hydrolysis on bioethanol production from durian peel waste (Durio zibethinus murr) Shanta Noventhya Ginting; Epi Kristina Simanullang; Lindu Parningotan Simanullang; Bajoka Nainggolan; Saronom Silaban
Jurnal Pendidikan Kimia (JPKim) Vol 10, No 2 (2018): August
Publisher : Pascasarjana Universitas Negeri Medan

Abstract: The dependence on fossil fuels is a big problem and needs an urgent solution. One of the steps taken is the utilization of bioethanol "lignocellulose". This research uses natural material with high lignocellulose content that is durian peel waste and aims to make durian peel waste as raw material of bioethanol production with variation of H2SO4 concentration, temperature, and acid hydrolysis time. The variable used is H2SO4 concentration of 1%, 3%, and 5%; temperature of 100˚C, 120˚C, and 140˚C; and time of 120 minutes, 150 minutes, and 180 minutes. From the analysis, the highest bioethanol purity was obtained at 99.81% at 100˚C and hydrolysis time at 120 minutes.Keywords:acid hydrolysis; bioethanol; durian peel waste; optimization

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