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INDONESIA
Jurnal Pendidikan Fisika Indonesia
Published by Universitas Negeri Semarang
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Core Subject : Science, Education,
Education Physics
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Articles 553 Documents
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DEVELOPMENT OF SCIENCE TEXTBOOK BASED ON SCIENTIFIC LITERACY FOR SECONDARY SCHOOL
Jurnal Pendidikan Fisika Indonesia Vol 12, No 2 (2016)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v12i2.4252

Abstract

The purpose of this research is to develop scientific literacy-based science text books and to determine the characteristics, validity, readability, as well as the effectiveness of the textbooks.The study started with product development and then continued by feasibility test and readability test. Feasibility test was done with the respondent of lecturer and science teachers of VII, VIII, IX grade at SMP N at Central Java. Readability test used cloze test that filled by VII, VIII, and IX grade students at that schools. The data analysis was done with percentage discription and t-test. The study results in feasibility test showed that the developed literacy science textbook has average score 90,74%. It means the literacy science textbook is suitable. Based on the readability test result, science literacy textbook is easy to learn. The average of score of cloze test was 88,14%. The effectiveness of the developed science textbook was classified as an effective stimulant to increase students’ scientific literacy.Tujuan penelitian ini adalah mengembangkan buku ajar IPA berbasis literasi sains, menentukan karakteristik, kevalidannya, tingkat keterbacaan, dan keefektifannya. Penelitian pengembangan ini dimulai dengan analisis kebutuhan, penyusunan tema, pengembangan buku ajar, uji kevalidan dan keterbacaan buku yang telah dikembangkan. Validasi dilakukan oleh dosen dan guru IPA kelas VII, VII, IX. Uji validitas, tingkat keterbacaan dan keefektifan buku dilakukan di SMP N di Jawa Tengah. Subjek ujicoba adalah siswa kelas VII, VIII, IX. Teknik analisis data menggunakan deskriptif persentase untuk uji kevalidan dan keterbacaan, dan uji t untuk keefektifan. Hasil validasi menunjukkan seluruh buku yang dikembangkan adalah valid dengan rata-rata skor 90,74% berada pada kategori sangat valid. Skor rata-rata tingkat keterbacaan sebesar 88,14% beradapada kategori mudah dipahami. Buku ajar yang dikembangkan efektif untuk meningkatkan kemampuan literasi sains.
PEMBELAJARAN REAL LABORATORY DAN TUGAS MANDIRI FISIKA PADA SISWA SMK SESUAI DENGAN KETERAMPILAN ABAD 21
Jurnal Pendidikan Fisika Indonesia Vol 11, No 1 (2015)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v11i1.4005

Abstract

Tujuan penelitian ini untuk mendapatkan gambaran pembelajaran real laboratory dan tugas mandiri fisika pada siswa SMK. Paket real laboratory konsep gelombang bunyi dilakukan untuk mengidentifikasi fenomena bunyi yang belum mampu dipraktikumkan menggunakan KIT mekanika. Prosedur penelitian terdiri dari persiapan dan pelaksanaan. Pada tahap persiapan dilakukan analisis konsep gelombang bunyi dan penyusunan instrumen penelitian. Pada tahap pelaksanaan diterapkan pembelajaran real laboratory dan tugas mandiri fisika pada siswa SMK, selanjutnya dilakukan analisis data hasil penelitian. Berdasarkan hasil penelitian diperoleh bahwa keterampilan kinerja dan keaktifan siswa yang mendapatkan pembelajaran real laboratory dengan tugas mandiri lebih baik dibandingkan dengan hasil tes kinerja siswa yang hanya mendapatkan pembelajaran real laboratory. The purpose of this work is to get an idea of the real learning physics laboratory and self-regulated assignment of vocational students. A real laboratory package of sound wave concept was done to identify the sound phenomena that have not been able to be practiced using mechanics apparaturs sets. The procedure of this work consists of the preparation and execution, where in the preparatory phase it was done an analysis of sound wave concept and preparation of research instruments. The implementation was done using real laboratory learning and self-regulated assignment of physics subject on vocational students, further the analysis of the research data was also done. The result showed that the performance and activity of students getting a real laboratory learning with self-regulated assignment are better than that of students only getting real laboratory learning.
Invers Modeling Gravity Data for Semi-Infinite Slab Using Matlab
Jurnal Pendidikan Fisika Indonesia Vol 15, No 2 (2019)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v15i2.21937

Abstract

Semi-infinite slab modeling has been made through inverse data gravity using Matlab. Inversion of gravity data is done by first determining the simulation data. Forward modeling uses simulation data to produce an initial guess inversion model expressed with parameters n0 (1), n0 (2), n0 (3) and n0 (4). The forward modeling is performed on the next initial guess that the value of the misfit is as small as possible through an iteration using the Jacobian matrix. Accuracy of inversion results is determined by the initial guess and the number of iterations. The results obtained show that inversion modeling is more valid in the inversion modeling process compared to advanced modeling, because the value of the parameters sought is generated from mathematical observations of the observation data. Guesses greatly affect the results of inversions obtained. Initial guesses are given in the form of parameters n0 (1), n0 (2), n0 (3) and n0 (4). The initial guess for the parameters n0 (1), and n0 (2) that are made far deviant does not affect inversion. The initial guess for the parameters n0 (3), and n0 (4) that are made deviating far influences the inversion caused by a very small RCON value so that the result is NAN
Improving of The Student Learning in Lectures of General Physics I by Collaborative Learning Model Based on Saintific Approach
Jurnal Pendidikan Fisika Indonesia Vol 13, No 2 (2017)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v13i2.8570

Abstract

This research aim is improving the learning outcomes of the students on General Physics course I. This research was done at Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan. The Collaborative Learning Model is based on a Scientific Approach. There are three subject matters: Kinematics, Dynamics, Effort and Energy. A set of 20 multiple choice questions was used in each cycle as the instrument to measure the student's learning outcomes which had been predictively validated. Based on SPSS 17.0 analysis result, this instrument was declared valid and has had high reliability. For each cycle a pre-test and post-test were implemented. The result shows that there is a significant increase of student learning outcomes for each cycle in respect to the value of normalized gain.
INFLUENCE OF CONCENTRATION OF RIND EXTRACT OF RED DRAGON FRUIT (HYLOCEREUS COSTARICENSIS) AGAINST THE DSSC EFFECIENCY
Jurnal Pendidikan Fisika Indonesia Vol 12, No 1 (2016)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v12i1.4222

Abstract

Research on utilization of rind extracts of red dragon fruit (hylocereus costaricensis) as sensitizer for dye sensitized solar cell (DSSC) has been conducted by reviewing influence of the concentration against the DSSC efficiency. Characterization on optical absorption at various concentrations and identification of functional groups, each using an UV-Vis spectrometer and Fourier transform infra red (FTIR), have done to the dye in the form of the extracts. The dye characterization result on optical absorption at various concentration shows that the optical absorption at range of wavelength 320-760 nm has the peak of absorbance tend to increase with increasing the concentration. Therefore the dye is capable to role as a sunlight absorber. Meanwhile, infra red absorption spectrum obtained from FTIR results indicate the presence of functional groups O-H, C=O, C=C, C-O, and C-H aromatic. Results of current-voltage characterization of DSSC show an increase in maximum power and efficiency with increasing concentration.Penelitian mengenai pemanfaatan ekstrak kulit buah naga merah (hylocereus costaricensis) sebagai penyensitif pada dye sensitized solar cell (DSSC) telah dilakukan dengan meninjau pengaruh konsentrasi ekstrak terhadap efisiensi DSSC. Terhadap dye berupa ekstrak kulit H. Costaricencis dilakukan pengujian serapan optik pada berbagai konsentrasi dan identifikasi gugus fungsi, masing-masing menggunakan spektrometer UV-Vis dan fourier transform infra red (FTIR). Hasil pengujian dye pada konsentrasi 100 %, 50 %, 33,33 %, 25%, dan 20% menunjukan serapan optik yang terjadi pada panjang gelombang 320-760 nm, memiliki puncak yang cenderung semakin tinggi seiring dengan peningkatan konsentrasi. Dye yang berasal dari ekstrak kulit H. Costaricensis ini mampu berperan sebagai sunlight absorber. Sementara itu, spektrum serapan infra red yang diperoleh dari hasil FTIR mengindikasikan adanya gugus fungsi O-H, C=O, C=C, C-O, dan C-H aromatik. Hasil karakterisasi arus-tegangan dari DSSC menunjukkan adanya peningkatan nilai daya maksimum dan efisiensi seiring peningkatan konsentrasi. 
SINTESIS NANOSERAT POLI(VINIL ALKOHOL) DALAM BENTUK LEMBARAN DENGAN PEMINTAL ELEKTRIK MULTI NOZEL DAN KOLEKTOR DRUM
Jurnal Pendidikan Fisika Indonesia Vol 10, No 2 (2014)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v10i2.3455

Abstract

Sistem pemintalan elektrik jarum tunggal dan kolektor bidang memiliki kelemahan, yaitu laju produksi yang rendah. Untuk mengatasinya digunakan sistem jarum banyak yang berjejer (multi nozel) dan kolektor berbentuk silinder berputar (kolektor drum). Banyaknya jarum dimaksudkan untuk menambah laju produksi, kolektor drum berputar dimaksudkan agar dihasilkan nanoserat dalam bentuk lembaran yang seragam. Tujuan penelitian adalah untuk menguji pengaruh medan listrik pada proses pemintalan elektrik multi nozel dan kolektor drum berputar, serta mengontrol morfologi nanoserat poli(vinil alkohol)/PVA yang dihasilkan dengan cara mengubah laju alir larutan. Hasil penelitian yang didapat adalah: (1) telah berhasil dibuat nanoserat PVA dalam bentuk lembaran yang menumpuk di kolektor drum, (2) pada pemintalan elektrik dengan sistem multi nozel terjadi distorsi medan listrik pada ujung jarum yang menyebabkan serat pada kolektor tidak rata, (3) morfologi nanoserat PVA yang dihasilkan pada laju alir 0,4 dan 0,6 ml/jam banyak mengandung butiran, sedangkan pada laju alir 0,8 ml/jam jumlah butiran berkurang.ABSTRACTElectrospinning system with single needle and planar collector has the disadvantage of a low productivity. To overcome this problem drum collector and multi-nozzle system were employed. The multi-nozzle system was used to improve the production rate, while the drum collector was used for maintaining the uniformity of the size. The purposes of this study were to examine the influence of electric field in the electrospinning process and to control the morphology of the obtained poly(vinyl alcohol)/PVA nanofibers by changing the solution flow rate. The obtained results were: (1) PVA nanofibers membrane have been successfully produced stacked on the drum collector, (2) distortion of the electric field at the tip of the needle was occurred, which results in inhomogeneous thickness of the stacked nanofibers, and (3) the morphology of the obtained nanofibers at the flow rates of 0.4 and 0.6 ml/hour have many beads while at 0.8 ml/hour the number of beads decreased.
The Influence of Problem Based Learning on Critical Thinking Ability for Students in Optical Instrument Topic
Jurnal Pendidikan Fisika Indonesia Vol 15, No 1 (2019)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v15i1.19309

Abstract

The research aims to reveal the influence of the Problem Based Learning (PBL) model on students' critical thinking ability in optical instrument material. This research is a quasi-experimental research with Pre-test and Post-test Design. The subjects of this study were class X MAN 3 Malang. The experimental and control classes received PBL models and conventional learning models respectively. The instrument of this study was the Optical Instrument Critical Thinking Ability Test in the form of 14 essay questions with Cronbach’s alpha reliability 0.78. The research data were analyzed using several tests including t-test, N-gain, and size effect tests. Based on the results of the analysis, it was shown that the implementation of the PBL model succeeded in increasing students' critical thinking ability higher than that of conventional learning. The experimental class was able to reach the high N-gain score category, while the control class was in the medium category. The research has a “large” size effect category. This means that the PBL model implemented has a stronger influence than that of conventional learning in improving students' critical thinking ability. Thus, the PBL model can be recommended as an alternative learning model in improving students' critical thinking ability in physics learning on the topic of optical instruments.Penelitian bertujuan untuk mengungkap pengaruh model Problem Based Learning (PBL) terhadap kemampuan berpikir kritis siswa pada materi alat optik. Peneitian ini adalah penelitian kuasi eksperimen dengan Pre-test and Post-test Design. Subjek penelitian ini adalah siswa kelas X MAN 3 Malang. Kelas eksperimen dan kontrol, masing-masing menerima model PBL dan model pembelajaran konvensional. Instrumen penelitian ini adalah Tes Kemampuan Berpikir Kritis Alat Optik yang berupa 14 butir soal essay dengan reliabilitas alpha Cronbach 0,78. Data penelitian dianalisis dengan menggunakan beberapa uji antara lain uji-t, N-gain, dan size effect. Hasil analisis tersebut menunjukkan bahwa implementasi model PBL berhasil meningkatkan kemampuan berpikir kritis siswa lebih tinggi daripada pembelajaran konvensional. Kelas eksperimen mampu mencapai kategori N-gain score tinggi, sedangkan kelas kontrol pada kategori medium. Penelitian ini mampu mencapai size effect kategori “besar”. Hal ini berarti model PBL yang diimplementasikan memiliki pengaruh kuat daripada implemnatasi pembelajaran konvensional dalam meningkatkan kemampuan berpikir kritis siswa. Dengan demikian, model PBL dapat direkomendasikan sebagai salah satu model pembelajaran alternatif dalam peningkatan kemampuan berpikir kritis siswa dalam pembelajaran fisika pada topik instrumen optik.
PENERAPAN MODEL PEMBELAJARAN PEMBANGKIT ARGUMEN MENGGUNAKAN METODE SAINTIFIK UNTUK MENINGKATKAN KEMAMPUAN KOGNITIF DAN KETERAMPILAN BERARGUMENTASI SISWA
Jurnal Pendidikan Fisika Indonesia Vol 10, No 2 (2014)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v10i2.3347

Abstract

Penelitian ini dilakukan untuk memperoleh gambaran tentang perbedaan peningkatan kemampuan kognitif dan keterampilan berargumentasi siswa yang mendapatkan pembelajaran fisika dengan model pembangkit argumen menggunakan metode saintifik dan tanpa menggunakan metode saintifik, serta memperoleh gambaran mengenai hubungan antara keterampilan berargumentasi dengan kemampuan kognitif siswa yang mendapat pembelajaran dengan model pembangkit argumen menggunakan metode saintifik. Penelitian dilakukan menggunakan metode eksperimen semu dengan desain randomized control group pretest–posttest design. Populasinya adalah seluruh siswa kelas X MIA pada salah satu SMA Negeri di Kabupaten Pemalang. Sampel sebanyak dua kelas yang dipilih secara cluster random sampling. Hasil penelitian menunjukan bahwa terjadi peningkatan kemampuan kognitif dan keterampilan berargumentasi siswa di kedua kelas. Namun, besarnya peningkatan pada kelas eksperimen lebih signifikan dibanding kelas kontrol. Selain itu, terdapat hubungan yang kuat dan signifikan antara keterampilan berargumentasi dengan kemampuan kognitif siswa yang mendapat pembelajaran dengan model pembangkit argumen menggunakan metode saintifik.ABSTRACTThe purposes of this study were to determine the difference between the generate-an-argument instructional model using scientific method and without scientific method in improving student’s cognitive abilities and argumentation skills, and to determine the correlation between the argumentation skills and the cognitive abilities in the generate-an-argument instructional model using scientific method class. The study was conducted using a quasi-experimental with randomized control group pretest-posttest design. The population were all of students in X MIA grades on one of the senior high schools in Pemalang district. There were two samples that chosen at random cluster sampling. The results showed that there was an improving of student’s cognitive abilities and argumentation skills in two classes. But, in the experiment’s class there was more significantly improvement student’s cognitive abilities and argumentation skills than in control class. In addition, there was a strong and significant correlation between argumentation skills and cognitive abilities of students having lesson implementing the generate-an-argument instructional model using scientific method.
Design of Experimental Problem Solving-Based Learning Program to Improve Mental Model and to Enhance Mental-Modeling Ability
Jurnal Pendidikan Fisika Indonesia Vol 14, No 2 (2018)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v14i2.6279

Abstract

Research on developing experimental problem solving-based learning program to overcome the low mental model (MM) and mental-modeling abilities (MMA) physics teacher candidate in one of the college teachers in Palu have been conducted. Mental model construction is the “core” of meaningful learning and along with MMA (modeling) become a keyword to understand the key concepts in the science learning. The development of this learning program was using R D method. Development process from requirement analysis phase until implementation process has already been described using 4D model: define, design, develop and disseminate. The subject matter of this research was the Basic Physics II course on the topic of electricity and magnetism. Based on the data analysis and findings at each stage of development, it is concluded that the learning program stages which have improved MM and also enhanced the MMA of physics teacher candidates consist of learning orientation phase; orientation to the problem; pre-experimental brainstorming; experiment; evaluation; as well as the phase of reinforcement and follow-up.Penelitian tentang pengembangan program berbasis eksperimen problem solving untuk mengatasi rendahnya mental model (MM) dan mental-modeling abilities (MMA) calon guru fisika di salah satu guru perguruan tinggi di Palu telah dilakukan. Konstruksi model mental adalah inti dari pembelajaran yang bermakna dan bersama dengan MMA (pemodelan) menjadi kata kunci untuk memahami konsep-konsep kunci dalam sains. Pengembangan program pembelajaran ini menggunakan metode R D. Proses pengembangan dari tahap analisis kebutuhan hingga proses implementasi dijelaskan menggunakan model 4D: define, design, develop, disseminate. Materi yang dikaji dalam penelitian ini adalah mata kuliah fisika dasar 2 tentang topik listrik dan magnet. Berdasarkan analisis data dan temuan pada setiap tahap perkembangan, disimpulkan bahwa tahapan program pembelajaran yang telah memperbaiki MM dan juga meningkatkan MMA calon guru fisika terdiri dari fase orientasi pembelajaran; orientasi pada masalah; pra-brainstorming eksperimental; percobaan; evaluasi; serta fase penguatan dan tindak lanjut.
TSUNAMI-MAGNETIC SIGNALS AND MAGNETIC ANOMALY GENERATED BY TSUNAMI WAVE PROPAGATION AT OPEN SEAS
Jurnal Pendidikan Fisika Indonesia Vol 13, No 1 (2017)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v13i1.7822

Abstract

This research examines the generation of tsunami-induced magnetic signals, where local magnetic anomaly were measured as variations in the vertical bz and horizontal bH components of the secondary field. The maximum amplitudes of bz and bH were analytically estimated and compared to magnetogram provided by INTERMAGNET and BCMT for the 2010 Chilean, the 2011 Tohoku, the 2010 Mentawai and the 2004 Aceh tsunamis. For the first two cases, frozen-flux theory was used to estimate bz and bH where the phase lag between bz and bH was ?/2, relevant to time interval of T/4 between the two signals. For the Mentawai case, oceanic diffusion was unignored and bz significantly deviated from that calculated using the theory. However, the data from Mentawai where bz ? 2 nT were in good agreement with bz generated by large tsunamis occurring in regions near the equator and with magnetogram from the Aceh event.

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