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INDONESIA
Jurnal Pendidikan Fisika Indonesia
Published by Universitas Negeri Semarang
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Education,
Education Physics
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Articles 553 Documents
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PENGARUH MODEL PENEMUAN TERBIMBING DENGAN STRATEGI SELF-EXPLANATION TERHADAP PRESTASI BELAJAR FISIKA ZAT PADAT MAHASISWA
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.v11i1.4000

Abstract

Penelitian ini ditujukan untuk mengungkap pengaruh pembelajaran model penemuan terbimbing dengan strategi self-explanation terhadap peningkatan prestasi belajar fisika zat padat mahasiswa pada bahasan struktur kristal dan dinamika kisi kristal. Penelitian ini menggunakan disain kuasi eksperimen rancangan Pre- and Posttest Design. Hasil penelitian menunjukkan bahwa pembelajaran model penemuan terbimbing dengan strategi self-explanation mampu meningkatkan prestasi belajar mahasiswa, yang ditandai oleh gain score ternormalisasi rata-rata kelas eksperimen 0,467 (kategori medium) lebih tinggi daripada kelas kontrol 0,385 (kategori medium); dan mahasiswa kelas model penemuan terbimbing dengan strategi self-explanation memiliki pencapaian prestasi belajar lebih tinggi secara signifikan daripada kelas model STAD dengan strategi self-explanation. Penelitian menghasilkan effect size 0,47 kategori “biasa”. Tetapi, mahasiswa kelas eksperimen memberikan respon positif terhadap proses pembelajaran lebih rendah daripada kelas kontrol.This study is aimed to reveal the influence of the guided discovery model with self-explanation learning strategy toward improvement of students’ achievement on solid state physics of the crystal and dynamic of lattice structures. The study uses quasi-experimental with Pre- and Posttest Design. The result shows that the guided discovery model with self-explanation learning strategy can improve students’ achievement.  Experiment class attaines the normalized everage gain score of 0.467 (medium category), while control class attaines the normalized everage gain score of 0.385 (medium category). Experiment class students have higher achievement significantly than control class. This research has effect size 0.47 in typical category. However, experiment class students give lower positive response than control class for learning process.  
Mapping Students' Problem-Solving Skills in Physics Subject After Inquiry Learning at Class X SMAN 1 Prambanan
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.v15i2.15246

Abstract

Problem-solving skills is necessary to be mastered by students to help them in solving the problems of their daily life in the future. The purpose of this study was to map the student problem-solving skills after inquiry learning in Physics subject, impulse, and momentum in class X SMAN 1 Prambanan, Yogyakarta. Experimental research model with one-shot case study design was used in this study. Data collection was performed through essays at the end of the learning process. The results of the mapping show that students have different problem-solving skills levels at each stage. At the stage of problem identification, students were in a very good category. At the stage of planning the problem solution and problem-solving implementation, the students were in a good category, while in results evaluation, the students were in a fairly good category. The result of this study can contribute to giving the point of view to the teacher about students' problem-solving skills level based on the indicators as well as giving the additional information as a literature in the topic of students’ problem-solving skills after inquiry learning.
CAPAIAN LEVEL BERPIKIR REFLEKTIF MAHASISWA PROGRAM REMIDIAL PERKULIAHAN FISIKA MATEMATIKA 1 BERBASIS COGNITIVE APPRENTICESHIP INSTRUCTION
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.v10i2.3450

Abstract

Penelitian ini bertujuan untuk mengetahui capaian level berpikir reflektif mahasiswa yang menempuh program remidial perkuliahan Fisika Matematika 1(Fismat 1) berbasis Cognitive Apprenticeship Instruction (CAI). Penelitian ini merupakan penelitian pendahuluan dari serangkaian penelitian mixed method dengan desain embedded experimental yang melibatkan 6 orang mahasiswa dan diamati dalam empat tatap muka. Perkuliahan berbasis CAI ini menggunakan sintaks perkuliahan yang terdiri atas tahapan modeling, coaching, articulation, reflection, dan exploration. Pada akhir penelitian mahasiswa diberi tes keterampilan berpikir reflektif, diminta mengisi angket, dan diwawancarai. Data dianalisis secara kualitatif dan ditriangulasi dari hasil analisis observasi, angket, dan wawancara. Hasil penelitian ini menginformasikan bahwa perkuliahan Fismat 1 berbasis CAI membantu mahasiswa yang mengikuti remidial sehingga mampu berpikir reflektif pada level kedua dari empat level berpikir reflektif, yaitu understanding. Beberapa kriteria berpikir reflektif masih belum dicapai mahasiswa secara optimal. Oleh karena itu perlu strategi yang lebih efektif dalam setiap tahapan CAI untuk meningkatkan level berpikir reflektif mahasiswa.ABSTRACTThis research is a mixed method research design which aimed to determine the students’ reflective thinking level after they experienced cognitive apprenticeship instruction (CAI) based learning program in the Mathematical Physics 1. Syntaxes of CAI program are modeling, coaching, articulation, reflection, and exploration. The data was collected from six remedial students’ performances of reflective thinking skill test and was analyzed using qualitative approach by triangulating it with observation and questionnaire, as well as interview results. The data analysis showed that the remedial students’ level was on the second phase of reflective thinking skill, namely understanding level. Several criterias of reflective thinking skill were still poor achieved by the students. Therefore, the more effective strategies applied in every syntax of CAI are required in order to improve the students’ level of reflective thinking.
Designing and Developing Rechargeable Aluminium-Ion Battery using Graphite Coated Activated Charcoal Corncob as Cathode Material
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.v14i2.9691

Abstract

One of the renewable energy storage systems that can be used today is the aluminum ion battery. In this study, aluminum foil was used as anode, polyetylene polyprophylene (PE/PP) as separator, electrolyte from AlCl3/[EMIm]Cl and graphite coated corncob, an activated charcoal, as cathode. Coating method of cathode materials was done by mixing both graphite and activated charcoal with varied composition 1:0.5, 1:1, 1:1.5, and 1:3. The coating process began by mixing the graphite and corncob with ethanol as a solvent for six hours, then heating in an oven at 80 °C for three days, gradual drying in a furnace at 350 °C for five hours and sintering at 600 °C for six hours. From this research, SEM results showed that carbon particles were evenly distributed, with spherical particles. The spherical shape was the main requirement of carbon formation in order to produce high energy. Based on the results, battery potential was 2.54 V with average of optimal capacity at a ratio of graphite and corncob activated charcoal 1:1.5 was 83.067 mAh/g. The highest efficiency was also at a ratio of 1:1.5 of 97.20%, because at this ratio, there was an increasing in percentage of element C 91.74%, greater than the percentage of element C on the other three cathode samples.Salah satu sistem penyimpan energi terbarukan yang bisa digunakan saat ini adalah baterai ion aluminium. Pada penelitian ini digunakan aluminium foil sebagai anoda, polyetylene polyprophylene (PE/PP) sebagai separator, elektrolit menggunakan AlCl3/[EMIm]Cl dan grafit terlapisi arang aktif tongkol jagung sebagai bahan katoda. Metode pelapisan bahan katoda dilakukan dengan mencampurkan grafit dan arang aktif dengan variasi komposisi 1:0,5, 1:1,1:1,5 dan 1:3. Proses pelapisan diawali dengan pencampuran grafit dan arang aktif tongkol jagung dengan ethanol sebagai pelarut selama enam jam kemudian pemanasan di oven pada suhu 80oC selama tiga hari, pengeringan bertahap di furnace pada suhu 350oC selama lima jam dan sintering pada suhu 600oC selama enam jam. Dari penelitian ini didapatkan hasil SEM menunjukkan bahwa partikel karbon terdistribusi merata, dengan bentuk partikel bulat (sphare).Sampelberbentuk bulat atau sphere merupakan syarat utama pembentukan karbon supaya dapat menghasilkan energi tinggi. Berdasarkan hasil uji baterai diperoleh potensial sebesar 2,54 Volt dengan rata-rata kapasitas optimal terjadi pada rasio grafit dan arang aktif tongkol jagung 1:1,5 sebesar 83,067 mAh/g. Efisiensi tertinggi juga terjadi pada rasio 1:1,5 sebesar 97,20%. Hal ini karena pada rasio 1:1,5 terjadi peningkatan persentase unsur C yakni 91.74% lebih besar dari persentase unsur C pada tiga sampel katoda yang lainnya.
LEARNING STRATEGY IMPLEMENTATION OF GENERATIVE LEARNING ASSISTED SCIENTIST’S CARD TO IMPROVE SELF EFFICACY OF JUNIOR HIGH SCHOOL STUDENT IN CLASS VIII
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.v12i1.4257

Abstract

In general, self-efficacy of the students is still low. This study aims to determine the learning strategies implementation of generative learning assisted scientist's card in improving self-efficacy and cognitive learning outcomes of the students. The study designed form One Group Pretest-Posttest Design. The improvement of self-efficacy can be determined from the change in the questionnaire score before and after the learning and observations during the learning process. Cognitive learning outcomes are known from pretest and posttest scores. To determine the improvement, the data were analyzed by using the gain test. The results showed that N-gain of self-efficacy is 0.13 (low) and N-gain of cognitive learning is 0.60 (medium). Based on the observation, students’ self-efficacy has increased each meeting. Cognitive learning results also achieved mastery learning as big as 72.88%. It could be concluded that the learning strategy of generative learning assisted scientist's card can improve self efficacy and cognitive learning outcomes of the students.Pada umumnya, self efficacy yang dimiliki siswa masih rendah. Penelitian ini bertujuan untuk mengetahui penerapan strategi pembelajaran generative learning berbantuan scientist’s card dalam meningkatkan self efficacy dan  hasil belajar  kognitif siswa.  Desain penelitian berbentuk One Group Pretest-Posttest Design. Peningkatan self efficacy dapat diketahui dari perubahan  skor angket sebelum dan sesudah pembelajaran dan hasil observasi selama pembelajaran. Hasil  belajar kognitif diketahui dari skor pretest dan posttest. Untuk mengetahui peningkatannya, data yang diperoleh dianalisis menggunakan uji gain. Hasil penelitian menunjukkan bahwa peningkatan self efficacy berkatagori rendah dan peningkatan hasil belajar kognitif berkatagori sedang. Berdasarkan hasil observasi, self efficacy siswa setiap pertemuan meningkat. Hasil belajar ranah kognitif juga mencapai ketuntasan belajar .Jadi dapat disimpulkan bahwa strategi pembelajaran generative learning berbantuan scientist’s card dapat meningkatkan self efficacy dan hasil belajar ranah kognitif siswa. 
SCIENCE LITERACY INDICATORS IN OPTICAL INSTRUMENTS OF HIGHSCHOOL PHYSICS TEXTBOOKS CHAPTER
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.v13i1.8391

Abstract

The direction of current science is emphasized on the importance of science literacy skill as a preparation for students returning to community after finishing school. Science literacy skill is believed can help the individuals to solve the problem scientifically and accountable. Science textbooks are instructional tools that help students learning science. The purpose of this research is to analyse the textbooks of Physics for high school grade X about Optical Instruments topic based on science literacy indicator. The study conducted in four senior highschools. There were two textbooks used in those schools, Book A and Book B. The results showed that on average the emergence of science literacy indicator of science nomenclature was 17.5%, intellectual process skills was 45.5%, the rules of scientific evidence was 8.5%, postulate of science was 19%, and scientific disposition was 9.5%. Book A contained of more research activities than Book B, but Book B linked the second indicator more comprehensive. The advantages and disadvantages of each analyzed textbooks can be used as a further background study for developing the good quality teaching material of physics-based scientific literacy.
INDEPENDENT LEARNING STRATEGY OF NATURAL SCIENCE WITH “ONE DAY ONE DIARY FOR SCIENCE” PROGRAM
Jurnal Pendidikan Fisika Indonesia Vol 11, No 2 (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.v11i2.4255

Abstract

Learning behavior and metacognitive skill of students affect cognitive value and level of understanding of each student. The application of the "One Day One Diary for Science" program is needed in learning to train students' metacognitive skills and independence in learning science. This study was performed to find out the learning behavior, the development of metacognitive skills, and both relation. The study was conducted by observation, interview, and documentation on 33 junior high school students. The result of the study was analyzed the domain, taxonomy, components, and culture growth, so the data of learning behavior and metacognitive skill of students based on the score level can be obtained. Based on data analysis, learning behavior and metacognitive skill on a higher grade is higher than the other classes. There is a strong correlation between learning behavior and metacognitive skills.Perilaku belajar dan kemampuan metakognitif  siswa mempengaruhi nilai kognitif dan tingkat pemahaman setiap siswa. Penerapan program  “ One Day One Diary for Science”  diperlukan dalam pembelajaran sains untuk melatih kemampuan metakognitif dan kemandirian siswa dalam belajar IPA. Penelitian ini bertujuan untuk mengetahui perilaku belajar, perkembangan kemampuan metakognitif, dan hubungan keduanya. Penelitian dilakukan dengan cara pengambilan data melalui  pengamatan, wawancara, dan dokumentasi serta triangulasi data dengan cara memperpanjang lama pengamatan pada 33 siswa Sekolah Menengah Pertama. Hasil penelitian dianalisis dengan analisis domain, taksonomi, komponensial, dan temuan budaya, sehingga diperoleh data perilaku belajar sains  dan kemampuan metakognitif siswa berdasarkan tingkatan kelas. Berdasarkan analisis data, perilaku belajar sains dan kemampuan metakogntif pada kelas atas lebih tinggi dibandingkan kelas lain. Terdapat hubungan yang kuat antara perilaku belajar dan kemampuan metakognitif
Optimization of The Electrospinning Process for Preparation of Nanofibers From Poly (Vinyl Alcohol) (PVA) and Chromolaena odorata L. Extrac (COE)
Jurnal Pendidikan Fisika Indonesia Vol 16, No 1 (2020)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v16i1.12629

Abstract

The Cromaloena odorata (COE) contains phenols, flavonoids, tannins, alkaloids, saponins, steroids that possess diverse therapeutic effects. However, COE has poor solubility in water and poor absorbtion in the body. Incorporation of COE in nanofiber system is a promising way to increase CEO solubility. One of the method to produce nanofiber is electrospinning. The electrospinning process there are three of the most important process parameters are applied flowrate, voltage and TCD. In this study we developed optimized condition for electrospinning process of polyvinyl alcohol (PVA)/CEO and their characterization. The Scanning electron microscopy (SEM) analysis showed that modification of flowrate and TCD did not affect the morphology of PVA and COE fiber. However fiber diameter decreased when lower flowrate, higher voltage was applied, and TCD. Fourier Transform Infrared (FTIR) study was conducted to identify possible intermolecular interaction between PVA/COE that has potential application as antimicrobial wound dressing.
Rancang Bangun Sistem Penangkap Gambar Radiograf Digital Berbasis Kamera DSLR
Jurnal Pendidikan Fisika Indonesia Vol 10, No 1 (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.v10i1.3052

Abstract

Telah dilakukan modifikasi sistem penangkap gambar kedap cahaya yang dapat menampilkan langsung citra radiograf digital pada layar monitor PC dan menyimpan file radiograf tersebut sehingga bisa ditampilkan kembali. Penelitian ini bertujuan membangun model prototip sistem penangkap gambar berbasis kamera digital, sehingga hasilnya bisa diproses lebih lanjut menggunakan perangkat lunak pengolah citra berbasis Matlab. Hasil pemotretan dengan sinar-X pada benda uji dan volunteer digunakan untuk menguji keajegan hasil radiograf tersebut, dan diperoleh perbaikan kontras yang signifikan, ditunjukkan dengan tampilan histogram, nilai MSE dan PSNR yang sesuai. Aplikasi perangkat lunak tersebut dalam menganalisis radiograf benda uji, kaki, tangan serta stepwedge menunjukkan juga kenaikan ukuran file, kontras radiograf dan resolusi citra yang meningkat. Hasil ini menunjukkan bahwa model penangkap gambar yang dilengkapi dengan perangkat lunak berbasis Matlab dapat dikembangkan untuk pemeriksaan radiografi digital yang efektif, efisien dan mempunyai nilai ekonomi yang tinggi. It has been modified a system of light-tight image capturing which can display directly digital radiograph image on the monitor screen of PC and save that radiograph digital image for re-displaying it. This research aims to build a prototype of digital camera based-image capturing, so that the result can be processed further using a mathlab based-image processing software. The imaging process using X-ray on the test materials and volunteers are used to investigate its image consistency and find more contrast image, shown on the histogram, appropriate MSE and PSNR values. The application of this software for analyzing test materials, feet, hands and stepwdge showed the file size increase, radiograph constrast, and image resolution. This result shows that a model of image capturing completed by software based-mathlab can be developed to check an effective, efficient and has an economic value digital radiography test result.
THE POROSITY CALCULATION OF VARIOUS TYPES OF PAPER USING IMAGE ANALYSIS
Jurnal Pendidikan Fisika Indonesia Vol 14, No 1 (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.v14i1.9878

Abstract

The paper porosity study has been done by observing microscopically.The purpose is provide airborne porosity data on various paper types, so that we can rank the ability of liquid absorption on the same paper type. This porosity analysis is done by using ImageJ, with converting the image to binary, set the threshold limit, and clarify the watershed limit. The result of the porosity of filter paper A=51,50586 , B=18,30719 ,C=21,68076 ,D=29,72028 ; tissue paper A=9,174071 ,B=20,96931 ,C=32,76454 ; HVS paper A=23,31616 ,B=27,70944 . So it can be concluded that the ability of filter paper absorption A filter paper D filter paper C filter paper B. Absorption ability tissue paper C tissue paper B tissue paper A. Absorption ability HVS B paper HVS paper A. In general can be inferred that the higher the porosity value of the paper the greater ability to absorb liquids on paper.

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