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Journal : Jurnal Pengajaran MIPA

PENERAPAN METODE PEMBELAJARAN DEMONSTRASI INTERAKTIF UNTUK MENINGKATKAN HASIL BELAJAR FISIKA SISWA SMA PADA KONSEP SUHU DAN KALOR Annisa, Fanny Nurul; Karim, Saeful; Aminudin, Ahmad
Jurnal Pengajaran MIPA Vol 19, No 1 (2014): JPMIPA: Volume 19, Issue 1, 2014
Publisher : Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18269/jpmipa.v19i1.36160

Abstract

ABSTRAKBerdasarkan hasil observasi yang menunjukan bahwa 60% siswa mendapat nilai di bawah nilai KKM yang sudah ditentukan. Metode pembelajaran Demonstrasi Interaktif dapat menjadi salah satu alternatif metode pembelajaran yang diterapkan untuk meningkatkan hasil belajar dan respon siswa. Desain penelitian yang digunakan adalah One Group Pretest Postest Design, yang diterapkan pada 40 siswa. Berdasarkan hasil penelitian diperoleh bahwa hasil belajar siswa mengalami peningkatan pada setiap seri pembelajaran setelah diterapkannya metode pembelajaran Demonstrasi Interaktif. Pada seri I IPK pretest 38,86% (rendah) dan IPK postest 55,45% (sedang), pada seri II IPK pretest 36,59% (rendah) dan IPK postest 55,67% (sedang), pada seri III IPK pretest 29,06% (rendah) dan IPK postest 55,94% (sedang). Untuk profil aktifitas siswa rata-rata aktivitas motorik memiliki persentase 59,07% (cukup), aktivitas visual memiliki persentase 61,46% (baik), aktivitas lisan memiliki persentase 64,24% (baik). Respon siswa untuk pernyataan positif, jumlah responden menjawab ya sebesar 84,4% dan tidak sebesar 15,6%, untuk persentase rata-rata pernyataan negatif, jumlah responden menjawab ya sebesar 42,5% dan tidak sebesar 57,5%.ABSTRACTBased on observations which showed that 60% of students scored below a predetermined value of KKM. Interactive Demonstration method that can be an alternative learning methods were applied to improve learning outcomes and student response. The study design used was one group pretest posttest design, which is applied to 40 students. The result showed that the learning outcomes of students has increased in each series learning after the implementation of an Interactive Demonstration methods. In the first series of pretest GPA 38.86% (low) and 55.45% GPA posttest (medium) , the second series of pretest GPA 36.59% (low) and posttest GPA 55.67% (moderate), the GPA Series III pretest 29.06% (low) and posttest GPA 55.94% (moderate). For the activity profile of the average student has a percentage of motor activity 59.07% (enough), visual activity has a 61.46% percentage (good), the percentage of oral activity has 64.24% (excellent). Students' positive response to the statement, the number of respondents answered yes by 84.4% and 15.6%, for the average percentage of negative statements, the number of respondents answered YES by 42.5% and NO by 57.5% .
PENGARUH TEMPERATUR TERHADAP TINGKAT SERAPAN AIR DALAM BAHAN POLY (2-VINYL PYRIDINE -CO-STYRENE) Wiendartun, Wiendartun; Rusnayati, Heni; Karim, Saeful
Jurnal Pengajaran MIPA Vol 2, No 2 (2001): JPMIPA: Volume 2, Issue 2, 2001
Publisher : Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18269/jpmipa.v2i2.34918

Abstract

Hydrophilic properties of organic polymer such as Poly (2-Vinylpyridine-Co-Styrene) have been found to have a correlation with other physical properties especially the electric resistivity. In this work, we have studied one of the physical properties of a polymer material, Poly (2-Vinylpyridine-Co-Styrene), that is the electric resistivity. It was studied on the basis of its relation with the concentration, temperature, humidity and the distance between their electrodes. The sample fabricated consists of two types of consentration: 0.03 gr/ml and 0.05 gr/ml with the distance between the two electrodes are 0.40 mm and 0.80 mm respectively. Towards these samples, we investigated the resistance coefficient for every 2% change in humidity for both drying and watering processes. From the experiment we obtain the following results: 1) There is hysteresis during the watering and drying processes indicating the continuity of resistance of this material, 2) Sample with smaller distance of electrodes performs better than that of the longer ones, 3) Sample fabricated from solution with higher concentration performs better than that of the lower ones, 4) Room temperature plays a significant role on the performance of the polymer material between the associated electrodes. These results could be used as a stepping-stone toward the more advance research leading the determination of film stability, resistancy upon temperature variation etc, so that this polymer material could be further developed into the humidity sensor device material.
PENENTUAN ELEKTROMOTANSI TERMAL BEBERAPA JENIS TERMOKOPEL DENGAN PASANGAN LOGAM YANG BERVARIASI Karim, Saeful; Sunardi, Sunardi
Jurnal Pengajaran MIPA Vol 8, No 2 (2006): JPMIPA: Volume 8, Issue 2, 2006
Publisher : Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18269/jpmipa.v8i2.35684

Abstract

An experiment has been done to observe about relation of difference temperature with electromotive force between two metal junctions. This experiment directed to determine the coeficient thermal electromotantion from some termocouples and to find metal junction which most linier. In this experiment used experimental method with some instrument, there is thermometer, galvanometer, and potentiometer ( nichrom ). Termocouple is used in this experiment bent two metal junction, there is cooper – steel, nichrom-steel, nichrom – cooper, irom-steel, iron-nichrom, and cooper – iron. Extending of temperature is used inthis experiment there is reference temperature ( To = 1 oC ) and measuring temperature ( 30 – 75 oC ). From this experiment we find some illustrations that the more higher of difference temperature between two metal junction there for the more higher too of electromotive force has producted from two metal junctions ( termocouple ). For junction cooper iron and iron nichrom has producted non linier relation ( relation of electromotive force with difference temperature ). But for junction cooper steel, nichrom steel, and iron steel has producted linier relations, junction nichrom cooper have relation most linier with coeficient thermal electromotantion 0,0472 mV/ 0C.Coeficient thermal electromotantion will be different depend on metal.
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE STAD (STUDENTTEAMS-ACHIEVMENT-DIVISIONS) UNTUK MENINGKATKAN PRESTASI BELAJAR DAN KERJASAMA SISWA Saeful Karim; Setiya Utari; Fipit Riana Utami
Jurnal Pengajaran MIPA Vol 17, No 2 (2012): JPMIPA: Volume 17, Issue 2, 2012
Publisher : Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18269/jpmipa.v17i2.36104

Abstract

ABSTRAKBerdasarkan hasil studi pendahuluan dan observasi di salah satu SMP di kota Bandung, ditemukan beberapa fakta. Pertama, prestasi belajar siswa rendah. Kedua, siswa cenderung pasif dan kerjasama yang dilakukan belum melibatkan seluruh anggota kelompok. Dari temuan fakta ini, maka diperlukan suatu model pembelajaran yang mampu memfasilitasi peningkatan prestasi belajar dan membuat siswa lebih aktif dalam kegiatan pembelajaran. Salah satu solusinya adalah dengan penerapan model pembelajaran kooperatif tipe STAD. Karena pembelajaran kooperatif tipe STAD menekankan pada aktivitas dan interaksi diantara siswa untuk saling memotivasi dan saling membantu dalam menguasai materi pelajaran sehingga kerjasama yang terjadi akan melibatkan semua anggota kelompok, disamping itu juga dari beberapa penelitian membuktikan bahwa penggunaan metode pembelajaran kooperatif tipe STAD dapat meningkatkan prestasi belajar siswa. Metode penelitian yang digunakan yaitu metode kuasi eksperimen dengan desain penelitian one group pretest - posttest design dengan sampel penelitian 25 siswa kelas VIII-8 di salah satu SMP Kota Bandung. Pengambilan data dilakukan dengan menggunakan instrumen tes tertulis objektif jenis pilihan ganda dan lembar observasi aktivitas siswa dan guru. Peningkatan prestasi belajar siswa dapat diketahui dari hasil uji signifikansi pada skor pretest dan posttest prestasi belajar dengan menggunakan uji wilcoxon pada taraf signifikansi 95%, diperoleh bahwa terdapat peningkatan prestasi belajar siswa yang signifikan setelah diterapkan model pembelajaran kooperatif tipe STAD sebesar 77,44%. Peningkatan kerjasama siswa dapat diketahui dari data hasil observasi pada saat model pembelajaran kooperatif tipe STAD diterapkan. Dari hasil penelitian diketahui bahwa kerjasama siswa mengalami peningkatan pada setiap pertemuannya pada kategori sedang. ABSTRACTBased on the results of preliminary studies and observations in one junior high school in Bandung, found a few facts. First, low student achievement. Second, students tend to be passive and cooperation do not involve all members of the group. From the findings of this fact, we need a learning model that can facilitate the improvement of learning achievement and keep students more actively in learning activities. One solution is the implementation of cooperative learning model type STAD. Because type STAD cooperative learning emphasizes on activities and interaction among students to motivate each other and help each other to master the subject matter so that the cooperation that occurs will involve all members of the group, but it is also of some studies have shown that the use of type STAD cooperative learning can improve learning achievement students. The method used is the method of quasi-experimental research design with one group pretest - posttest design with a sample of 25 study-8 eighth grade students in one junior high school in Bandung. Data retrieval is done using an instrument written test objective type multiple choice and student activity sheets and teacher observation. Increased student achievement can be seen from the results of tests of significance on the pretest and posttest scores of learning achievement using Wilcoxon test at a significance level of 95%, found that there is an increase in student achievement significantly after application type STAD cooperative learning model by 77.44%. Improved cooperation of students can be seen from the data during the observation type STAD cooperative learning model applied. The survey results revealed that the cooperation of students has increased at every meeting in the middle category.