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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 10 Documents

Search results for , issue "Vol 6, No 1 (2014): April" : 10 Documents clear

PEMBUATAN ELEKTRODA SELEKTIF ION Cr (VI) DENGAN MENGGUNAKAN MEMBRAN KITOSAN Agus Kembaren; Roita T.T Panggabean
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract This research was aimed to make and to determine analytical performance of Cr (VI) ISE. The electrodes has made by mixing Chitosan(as electroactive), PVC (as matrix), and DBP (as plasticizer) in THF. Composition of PVC and DBP maintane in fix ratio, 1: 2, while the chitosan varried, 4%, 7%, 10%, 13% and 16%. The composite membrans soak into 1M K2Cr2O7 solution for the night, then tight on the tip of electrode body. Analytical performance of the electrodes were determined by nersnt factor and dynamic range, response time, selectifity coeficient, and life time. The results show that the electrodes with composition 4 % chitosan, 32 % DBP, and 64 % PVC have optimum performance. Dynamic range of this electrodes is between 10-5 M - 10-1 M , slope/nersnt factor 32.004 mv/decade, average response time 20.7 seconds. The electrodes are not interfered by Mn2+, Zn2+ and Fe3+. The electrodes can used with good performance in 3 days. Kata kunci : Elektroda selektif ion, membran kitosan

PENGARUH PEMBERIAN Virgin Coconut Oil VCO TERHADAP KADAR MALONDIALDEHID TIKUS PADA AKTIFITAS FISIK MAKSIMAL Fajar Apollo Sinaga
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstrak. Aktifitas fisik berat dapat mengakibatkan terjadi stress oksidatif diakibatkan produksi radikal bebas melebihi jumlah antioksidan di dalam tubuh. Malondialdehid (MDA) merupakan indikator umum yang digunakan untuk menentukan jumlah radikal bebas dan secara tidak langsung menilai kapasitas oksidan tubuh. Stres oksidatif dapat dicegah atau dikurangi dengan pemberian antioksidan. Salah satu sumber alami yang mengandung antioksidan adalah Virgin Coconut Oil (VCO). Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian VCO terhadap kadar malondialdehid pada tikus yang melakukan aktivitas fisik maksimal. Penelitian menggunakan pretest-postest control group design. Dua puluh empat tikus dibagi menjadi 4 kelompok. Kelompok kontrol (P0) diberikan 1,5 ml air suling, kelompok intervensi (P1), (P2) dan (P3) diberikan VCO dengan dosis berbeda (masing-masing 1 ml, 2 ml, dan 3 ml/hari). Semua kelompok dilatih untuk berenang selama 4 minggu dan kemudian dipaksa untuk berenang tanpa beban sampai kelelahan. Pengukuran MDA dilakukan sebelum pemberian VCO dan sesudah melakukan aktifitas fisik maksimal. Hasil analisis menunjukkan kadar MDA pada kelompok kontrol meningkat secara signifikan (P<0,05) dan pada kelompok perlakuan terjadi penurunan (P <0,05). Hasil penelitian menyimpulkan bahwa VCO dapat mencegah peningkatan produksi radikal bebas akibat aktifitas fisik maksimal. Kata Kunci: virgin coconut oil, radikal bebas, antioksidan, aktifitas fisik maksimal

UPAYA MENINGKATKAN KOMPENTESI CALON GURU (PRAKTIKAN) MELALUI SKENARIO PPL PEMBELAJARAN KIMIA DI SEKOLAH MITRA PPL Gulmah Sugiharti
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract This article report from an action research, aims to Strengthening Classroom Management, question skills and reinforcement learning Competencies through PPL-scenes (site experience) on teaching chemistry. This research conduct in SMA Negeri 1 Tanjung Pura Langkat Province of North Sumatera by student training school (which take) PPL activities . The action research data collect by applying the technique of observation and interpretation simultaneously. The focus of this study is the observation in classroom management competence, questioning skills, giving reinforcement by student PPL Chemistry, in the learning process cycle unit Chemistry. The format of observations taken from 2012 UPPL Referring as an instrument and descriptive method used to data analysis. The research data shows (1). To understand and recognize the mistake in learning activities Chemistry student behavior during the learning process, the student has increased sensitivity, especially at the end of the first cycle. (2). There are efforts through trial and error on the situation facing the class, after the experimentalist began to recognize the use of techniques of classroom management, the provision of reinforcement and questioning skills. (3). Student have been able to use classroom management, giving reinforcement and questioning skills in a more professional and situational aspects into account at the end of the third cycle. (4). Action research cycles have been successfully established practitioner competence in the use of classroom management, asking and giving reinforcement to the situation facing the class. Based on the analysis above action research proved very suitable to form an calu student competence as a Chemistry teacher. Keywords : action research; teacher competencies; teaching chemistry; school partner PPL

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)

PEMBUATAN VIRGIN COCONUT OIL (VCO) MELALUI KOMBINASI TEKNIK FERMENTASI DAN ENZIMATIS MENGGUNAKAN EKSTRAK NENAS Ramlan Silaban; Riza Sahala Manullang; Vivi Hutapea
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract This study aims to determine the optimum conditions of coconut milk to produce Virgin Coconut Oil (VCO) through combination of fermentation and enzymatic techniques. Technique is performed using a combination of the addition of yeast with a fixed concentration of 0.5 gram and pineapple extract (crude bromelain enzyme) with various concentration of 6 mL; 8 mL; 10 mL; 12 mL in 100 mL coconut cream, variations of pH 3 ; 4 ; 5 and the time of incubation for 24 hours at room temperature. Further analysis includes testing the quality of water content, free fatty acid content and iodine value obtained in the VCO. Results showed the treatment at pH 4; the addition of 0.5 grams of tempeh and 10 mL of pineapple extract produce optimum yield of 30.45 mL VCO. The test results of water content, free fatty acids and iodine value in a row is 0.27%; 0.144 mg KOH / g of oil; 7,12 mg iodine / 100 g oil. Virgin Coconut Oil (VCO) obtained good quality in accordance with SNI. Kata kunci: Pembuatan VCO, Fermentasi, Enzimatis

ANALISIS DAN PENGEMBANGAN BUKU AJAR KIMIA KELAS X SEMESTER I SMK FARMASI SESUAI KTS Boni Mariska Ratnawati; Ramlan Silaban; Eddiyanto Eddiyanto
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. This research aims to (1) Analyze the chemistry handbooks used in the vocational school of Pharmacy in North Sumatra, (2) Develop a sequence of chemical material suitable to grade X semester I and systematically according to KTSP of Pharmacy Vocational School, (3) Knowing what chemical materials worth and the right to be taught in Pharmacy vocational school grade X semester I so that learning is more systematic and easily understood by BSNP students in learning, (4) Developing the chemistry handbook for grade X semester I Pharmacy Vocational School appropriate with KTSP, and (5) Knowing the opinion of teachers of chemistry at Pharmacy Vocational School on the development of standard chemistry handbook of grade X semester I. Sample in this study are two publishers of chemistry handbooks used in grade X semester I of the most widely used in Pharmacy Vocational School in North Sumatera, has graduated from the book center, and marketed nationally and four vocational school chemistry teacher used grade X Pharmaceuticals as a respondent and has teaching experience in grade X Pharmacy Vocational School for a minimum of two years and a minimum education is bachelor degree (S1). This is a research development using qualitative data described by using the time sentence by emphasizing the documentary technique. This research instrument is a questionnaire with a book containing sheets of the feasibility of the indicators derived from the assessment of National Education Standards Agency (BSNP) in 2006, later identified occurrence for each book. Furthermore it is developing chemistry handbook for grade X semester I Pharmaceuticals appropriate vocational curriculum, which will be assessed by the respondent chemistry teachers of Pharmacy Vocational School. The assessment results of validation between the average range to determine whether or not worthy of the book used in grade X semester I of Pharmacy Vocational School. The results of the feasibility analysis of the contents of the handbooks most widely used chemical in the first semester of the grade X is obtained percentage Pharmacy Vocational School: books A, and B are, respectively 51.89% and 76.01%. Validation range obtained in the proposed grade X semester I of chemical materials Pharmacy Vocational School is 3.6 means that the proposal put forward appropriate materials are used in the development of chemistry handbooks for grade X semester I Pharmacy Vocational School. Assessment chemistry handbook for grade X semester I Pharmacy Vocational School on the feasibility of content, language, and presentation by chemistry teacher of Pharmacy Vocational School respondents obtained an average yield of the range of validation in order are 3,31; 3,52, and 3,51. Validation of the overall range obtained from the four respondents chemistry teacher of Pharmacy Vocational School is 3.45, this means that the Chemistry Handbook for Grade X Semester I Pharmacy Vocational School According With KTSP is valid and does not need to be revised again and have been feasible to use in chemistry learning in Pharmacy Vocational School.Keywords: Chemistry Handbook, Pharmacy Vocational School, Analysis, Development, KTSP

STUDI PERSEPSI REMAJA PUTRI ATAS DIET BERDASARKAN GOLONGAN DARAH (Studi Kasus di SMA Kemala Bhayangkari 1 Medan) Yulina Dwi Hastuty
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. This study aims to determine how the image of young women knowledge about diet based on blood type in SMA Kemala Bhayangkari 1 . Given the many teenagers now are unknowingly living with unhealthy patterns . This is evidenced by the mortality of young is high enough . Most of the cause is of the food consumed . Influence on the blood type diet is great because they can affect the digestive system , decreasing the body 's metabolism and diseases such as kanker. This is a descriptive study , using primary data obtained via questionnaires . The population in this study were all young women m in classes 2 IPA in SMA Kemala Bayangkari I Medan . The results showed that the level of knowledge of adolescents are in the category of pretty but there is still much less knowledgeable ( 26.67 % ). Resources based on respondents who get information from health workers are still there as much less knowledgeable ( 28.12 % ) . Based on the mother's education is the higher education are much less knowledgeable (15.38 %). Based on the work of teenage mothers found that mothers work are less knowledgeable as much (46.15 %). Based on a healthy lifestyle are much less knowledgeable (38.46 %). It can be concluded that the source of information , mother's education , mother's occupation and lifestyle can affect young women knowledge about diet based on blood type . Key words : ladies student perception, diet based on blood type

HUBUNGAN ANTARA POPULASI MIKROORGANISME UDARA DENGAN KEJADIAN INFEKSI SALURAN PERNAFASAN AKUT DI SEKITAR TEMPAT PEMBUANGAN AKHIR SAMPAH TERJUN MEDAN Nin Suharti; Erman Munir; Dwi Suryanto; Harry Agusnar
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. This study aims to determine the number of microorganisms in the landfill Terjun Medan and to determine its relationship with acute respiratory infections in the surrounding community. The results showed that at the center of TPAS (0 meter) the number of air microorganisms was 2322 cfu/m3. The farther from the center point the amount of air microorganisms declined with 94.4 % correlation rate. A safe distance was ≥ 750 meters, because the microorganism population was below the air quality standards established (<700 cfu/m3). Analysis of the incidence of acute respiratory infections in the community around landfill Terjun Medan indicated that the higher the population of air microorganisms the higher acute respiratory infections event with correlation value of 85.7 %. Identification of air microorganisms showed that the air around the landfill Terjun Medan contained acute respiratory infections causing microbes consisting of Streptococcus, Staphylococcus, Klebsiella, Corynebacterium, Aspergillus and Candida. Keywords : Landfill, Air Microorganisms, Acute Respiratory Infections

PENGARUH MODEL PEMBELAJARAN BERBASIS MASALAH BERMEDIAKAN INTERNET TERHADAP HASIL BELAJAR DAN KARAKTER JUBERMADITA PADA MATERI ASAM BASA SISWA SMA DI KOTA BINJAI Erni Juliani Siregar; Ramlan Silaban; Mahmud Mahmud
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstrak. Penelitian ini bertujuan untuk memperoleh suatu model pembelajaran kimia yang mampu mengembangkan karakter jujur, berpikir kritis, mandiri, disiplin dan bertanggungjawab (“jubermadita”) siswa SMA melalui integrasi media internet kedalam problem base learning, serta mengetahui bagaimana pengaruhnya terhadap hasil belajar kimia siswa. Untuk mencapai tujuan, dilakukan penelitian eksperimen semu melibatkan 3 kelas eksperimen yaitu model pembelajaran Net-PBL, model pembelajaran Net-DI, model pembelajaran DI. Instrumen yang digunakan adalah instrument test dan nontest yang sudah divalidasi terlebih dahulu. Data dianalisis secara deskriptif dan statistik menggunakan Anacova pada taraf signifikan α = 0,05. Hipotesis diuji dengan menggunakan General Linier Model Univariate dengan program SPSS 19. Hasil penelitian menunjukkan bahwa: (1) Telah diperoleh model pembelajaran kimia yang mampu mengembangkan karakter jujur, berpikir kritis, mandiri, disiplin dan bertanggungjawab ‘jubermadita” siswa SMA yang dinamakan model Net-BL, (2) Terdapat pengaruh hasil belajar yang signifikan antara siswa yang diajarkan dengan model pembelajaran Net-PBL dan model pembelajaran Net-DI serta model pembelajaran langsung (DI). (F=1,103, P=0,333>0,05)., (3) Terdapat pengaruh yang signifikan nilai karakter jubermadita yang terkembang antara siswa yang diajarkan dengan model pembelajaran Net-PBL dan model pembelajaran Net-DI serta model pembelajaran DI. (4) Terdapat hubungan yang signifikan nilai karakter jubermadita terhadap hasil belajar siswa yang diajarkan dengan model pembelajaran Net-PBL, model pembelajaran Net-DI, model pembelajaran DIKata Kunci: PBL, Media Internet, Kejujuran, Berfikir Kritis, Mandiri, Disiplin, Tanggung Jawab dan Hasil Belajr.

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

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