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Pengaruh Advance Organizer Berbasis Proyek Terhadap Kemampuan Analisis – Sintesis Siswa
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.v10i1.3044

Penelitian ini dilakukan untuk mengetahui pengaruh model pengatur kemajuan (advance organizer) berbasis proyek terhadap kemampuan analisis – sintesis siswa pada konsep Energi. Sebelum pembelajaran, diberikan tugas proyek pada siswa untuk merealisasikan bel listrik sederhana, rangkaian arus seri - paralel, dan tuas. Produk proyek digunakan sebagai advance organizer dalam pembelajaran di kelas. Penguatan kognitif dilakukan melalui diskusi kelompok dan pembuatan peta konsep, ekspositori guru di kelas, dan kegiatan eksperimen laboratorium. Data diambil melalui pretest, post test, observasi partisipatif pembelajaran oleh dua orang observer, penilaian produk, peta konsep dan laporan kegiatan eksperimen. Teknik analisis data meliputi uji prasyarat data dan uji hipotesis Hasil penelitian menunjukkan bahwa siswa mengalami peningkatan kemampuan analisis – sintesis dalam aspek menguraikan, mengkategorikan, mengidentifikasi, merumuskan pernyataan, merekonstruksi, menentukan konsep, dan menganalisis konsep dengan rata – rata peningkatan delta skor sebesar 54,46 %, uji t sebesar 6,4, dan skala gain sebesar 0,3. This study was conducted to determine the effect of project-based advance organizer model on student’s analysis - synthesis ability of the energy concept. Students were given an assignment to realize the project on simple electric bell, the series – parallel circuit, and lever, before learning. The products of project were used as an advanced organizer in the learning activity. Cognitive strengthening was done through group discussions and concept mapping, expository learning in the classroom, and laboratory experiments activities. The data were taken through a pretest, post-test, participant observation study by two observers, product assessment, concept maps and report of experiment activities. Results showed that the students’ analysis - synthesis ability increased in the aspect of describing, categorizing, identifying, statement formulating, reconstructing, concept determining, and analyzing the concept. The average increase in delta score was 54.46 %, while the t-test score was of 6.4 and a gain scale of 0.3.

VIRTUAL LABORATORY OF ELECTRICITY CONCEPT TO IMPROVE PROSPECTIVE PHYSICS TEACHERS CREATIVITY
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.v13i2.9234

A virtual laboratory for electrical materials has been developed in this study. The virtual laboratory was developed as an alternative laboratory due to the limited equipment of physics experiments and simultaneously assisting students in visualizing abstract concepts in physics. This article discusses the results of testing on the effects of virtual laboratories on improving the creativity of prospective physics teachers. Measurable creativity includes verbal and figural creativity. The model testing process uses the quasi-experimental method. The participant of this research is prospective physics teachers in Faculty of Teacher Training and Education, University of Mataram. The research instrument used in the form of tests of verbal and figural creativity related to the electrical material being studied. The results showed that there is a difference in the improvement of prospective physics teachersâ€™ creativity after learning in both groups. In general, the increase in creativity in the experimental group is higher than the control group. The increase in verbal and figural creativity of the two groups also differed significantly. In both groups, the increase of verbal creativity is higher than that of figural creativity. This suggested that the developed virtual lab model proved to enhance the creativity of prospective physics teachers.

SOLID WASTE-SILICA COMPOSITE FOR HIGH STRENGTH AND LIGHTWEIGHT MATERIAL APPLICATION
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.v12i1.4289

The solid waste composite was successfully made. Preliminary, the composite was synthesized using polyurethane as binder mixed with the solid waste using simple mixing method and then hot-pressed at at pressure of 4 metric-tons and temperature of 100°C for 20 minutes. To enhance its strength, silica nanoparticles with varied content then were added in the polyurethane-solid waste mixture. From the compressive strength test, it was obtained that polyurethane-solid waste composite with solid waste volume fraction of 87.15% had optimum compressive strength of 160 MPa. Meanwhile, for silica addition with the fraction of 0.4975%, the compressive strength became 200 MPa, or increased 23% of that without nanosilica. The enhancement was also briefly confirmed from FTIR Spectroscopy where some polyurethane spectra shifted small due to silica addition, especially in amine and carbonyl groups as its active groups. The strength is better than of brick (80 MPa), shalestone (73 MPa), silstone (92 MPa) and other stones. From density measurement, the composite-produced has density about 0.7 g/cm3 that comparable to Jati (Tectona grandis) and Mahoni (Swietenia macrophylla) having densities about 0.8 g/cm3 and 0.7 g/cm3 respectively. Therefore, this composite is very adequate for building material application to compete the woods. Komposit sampah sudah berhasil dibuat. Mula-mula, komposit disintesis dengan menggunakan poliuretan sebagai pengikat yang dicampur dengan sampah melalui metode pencamnpuran sederhana (simple mixing), kemudian dihot-press pada tekanan 4 metric ton dan suhu 100°C selama 20 menit. Untuk meningkatkan kekuatan mekaniknya, nanopartikel silica dengan berbagai komposisi ditambahkan dalam campuran poliuretan-sampah. Dengan menggunakan uji kekuatan tekan, didapatkan komposit poliuretan-sampah dengan fraksi volume sampah sebesar 87,15% memiliki kekuatan tekan sebesar 160 MPa. Selanjutnya, dengan penambahan silica sebesar 0,4975% (v/v) kekuatan tekan komposit menjadi 200 MPa, atau meningkat sebesar 23% dibandingkan komposit tanpa silica. Peningkatan ini juga dikonfirmasi melalui FTIR Spectroscopy yang menunjukkan adanya pergeseran kecil pada puncak spektra poliuretan akibat penambahan silica, utamanya pada gugus fungsi amina dan karbonil. Kekuatan mekanik komposit ini lebih baik daripada batu bata (80 MPa), batuan shale (73 MPa), batuan siltstone (92 MPa) dan beberapa jenis batuan yang lain. Dengan menggunakan uji kerapatan didapatkan komposit ini memiliki massa jenis 0,7 g/cm3, setara dengan kayu Jati (Tectona grandis) dan Mahoni (Swietenia macrophylla) yang memiliki massa jenis masing-masing 0,8 g/cm3 dan 0,7 g/cm3. Ini menunjukkan komposit yang dihasilkan sangat cocok untuk diaplikasikan sebagai bahan bangunan pengganti kayu.

DESIGN OF ELECTROPHORESIS DEVICE FOR OPTIMATION OF DNA VISUALIZATION AND DNA CONCENTRATION USING SOFTWARE
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.v10i2.3456

Molekul DNA menunjukkan polarisasi yang kuat sehingga memungkinkan baik gerak elektroforesis berdasarkan muatan negatifnya maupun gerak dielektroforesis berdasarkan induksi polarisasi. Perancangan alat menggunakan kombinasi prinsip elektroforesis dan dielektroforesis dilengkapi perangkat lunak untuk mengukur konsentrasinya sangat diperlukan. Utamanya mengingat uji kualitatif DNA berbasis visualisasi pada gel elektroforesis bersifat sangat subyektif dan kurang terukur. Pengukuran konsentrasi DNA menggunakan spektrofotometer UV/VIS sangat tergantung oleh ketersediaannya di laboratorium. Penelitian bertujuan untuk mendesain piranti untuk mengukur konsentrasi DNA berdasarkan visualisasinya pada gel elektroforesis menggunakan perangkat lunak berbasis MatLab. Pengukuran konsentrasi DNA didasarkan visualisasinya pada gel elektroforesis lalu dibandingkan dengan hasil penghitungan spektrofotometer UV/VIS. Hasil penelitian menggunakan piranti tersebut memperlihatkan visualisasi DNA yang lebih optimal. Hasil pengukuran jumlah DNA menggunakan spektrofotometer memiliki kecenderungan yang sama dengan hasil pengukuran menggunakan perangkat lunak berbasis MatLab meskipun terdapat perbedaan nilai kuantitatif.ABSTRACTMolecules of deoxyribo nucleic acid (DNA) show a strong polarization allowing for both motions of the dielectrophoresis induced by polarization and electrophoresis based on its negative charge. Considering high subjective and less quantifiable result of the visualization based qualitative test of DNA on gel electrophoresis, designing the tool using a combination of the principles of electrophoresis and dielectrophoresis completed with a software for optimization of DNA visualization and to measure the concentration of small and large–sized DNA fragment is very needed. Accuracy of measurement of DNA concentration using a spectrophotometer UV /VIS is depend on its availability in the laboratory. The aim of this study was to design device for optimization of DNA visualization and measuring the concentration in the gel electrophoresis using MatLab- based software. Experiment using this software measured the concentration of DNA based on its visualization and compared it with calculation obtained from spectrophotometer UV/VIS. The research results showed that the amount of DNA analysed using a spectrophotometer tend to similar with the measurement results using the MatLab-based software although there was differences in quantitative values.

Effectiveness of DILA Learning Model Application on Applied Physics Course in The Department of Mining Engineering
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.v15i1.15389

There is the fact that the students' learning outcome in Applied Physics course related to the application of the mining industry is unsatisfactory. Based on the results of the final score, the rate of successful students was only around 40%. Moreover, students' understanding application is also not by the desired competencies. In this research, a learning model was developed from the Contextual Teaching and Learning Model (CTL), i.e., DILA model which consists of four syntaxes (Display, Inquiry, Learning Community, and Authentic Assessment). The effectiveness of the DILA learning model was investigated to improve studentsâ€™ learning outcomes in the Applied Physics course. This research employed the quasi-experimental design where the experimental class was treated by DILA model based on Contextual Teaching and Learning; whereas control class was not treated by the model. Data were obtained from the results of the pre-test and post-test scores; then it was analyzed by a parametric with an independent t-test, related t-test, and the effect size. The results indicate that there was a significant increase in studentsâ€™ learning outcomes in the experimental class compared to the control class. In conclusion, DILA model can improve studentsâ€™ learning outcomes in the Applied Physics course effectively.Hasil belajar Fisika Terapan yang diperoleh mahasiswa yang terlihat dari nilai akhir semester dan penerapan pada industri pertambangan pada umumnya tidak memuaskan. Tingkat kelulusan mahasiswa hanya sekitar 40%. Sehingga pemahaman mahasiswa dalam penerapannya juga tidak sesuai dengan kompetensi yang diinginkan. Model DILA merupakan salah satu model pembelajaran yang dikembangkan dari Model Contextual Teaching and Learning (CTL). Model DILA terdiri atas empat sintaks yaitu: Display, Inquiry, Learning Community, dan Authenthic Assessment. Penelitian ini ditujukan untuk mengukur efektifitas Model Pembelajaran DILA guna meningkatkan hasil belajar mahasiswa pada matakuliah Fisika Terapan. Penelitian ini merupakan quasi eksperiment dimana kelas eksperimen diberikan pembelajaran dengan Model DILA berbasis Contextual Teaching and Learning. Data diperoleh dari hasil pre-test dan post-test dan diolah secara parametric dengan t test sample independent dan t test related serta effect sizenya. Hasil penelitian ini menunjukkan bahwa model pembelajaran DILA yang diterapkan pada matakuliah Fisika Terapan di Jurusan Teknik Pertambangan adalah efektif. Ini berarti model Pembelajaran DILA dapat meningkatkan hasil belajar mahasiswa pada matakuliah Fisika Terapan.

PENGEMBANGAN WEB INTRANET FISIKA UNTUK MENINGKATKAN PENGUASAAN KONSEP DAN KEMAMPUAN PEMECAHAN MASALAH SISWA SMK
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.v10i2.3447

Penelitian ini bertujuan untuk mengembangkan media pembelajaran web intranet fisika dan mengetahui pengaruhnya terhadap penguasaan konsep dan kemampuan pemecahan masalah siswa. Penelitian ini menggunakan desain penelitian dan pengembangan model Borg dan Gall yang dimodifikasi menjadi tiga tahap, yaitu tahap studi pendahuluan, tahap pengembangan media,dan tahap uji coba media. Tahap studi pendahuluan dilaksanakan dengan studi kepustakaan dan survei awal. Tahap pengembangan media menghasilkan draf awal media. Penelitian dilanjutkan dengan tahap implementasi uji coba terbatas dan uji coba lebih luas media pembelajaran web intranet fisika di SMKN 2 Praya Tengah. Pembelajaran materi usaha, energi, dan daya di kelas eksperimen menggunakan web intranet fisika sedangkan di kelas kontrol menggunakan pembelajaran konvensional. Kedua kelas dianalisis menggunakan uji perbedaan rata-rata (Uji t atau Uji Mann-Whitney) dan skor gain ternormalisasi (N-gain). Berdasarkan hasil penelitian dapat disimpulkan bahwa pembelajaran web intranet fisika efektif meningkatkan penguasaan konsep tetapi tidak efektif meningkatkan kemampuan pemecahan masalah siswa SMK.ABSTRACTThe research was aimed at developing a learning media of physics intranet web and knowing its impacts to the student’s concept comprehension and problem solving skills. The research used a research design and development model of Borg and Gall which was modified into three stages; those were stage of preliminary study, stage of media development, and stage of media testing.The stage of preliminary study was conducted by having literature review and initial survey. Furthermore media development generated an initial draft of media. The research was continued with the stage of limited testing and more extensive testing implementation of physics intranet web learning media at SMKN 2 Praya Tengah. The learning material of work, energy and power in the experimental group used the physics intranet web, while the control group used regular teaching. The data from both groups were analyzed using difference of means test (t-test or Mann-Whitney test) and normalized gain score (N-gain). The findings showed that learning of physics intranet web was effective to improve concept comprehension but ineffective to improve problem solving skills of the students of SMK.

Neutronic Design of Uranium-Plutonium Nitride Fuel-Based Gas-Cooled Fast Reactor (GFR)
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.v14i2.6602

This study presents the calculation results of the cell, and core Gas-cooled Fast Reactor (GFR) based fuel Uranium-Plutonium Nitride (U, Pu)N. Parameter survey results of calculations of the fuel cell consisting of a kinf, burnup level, and the conversion ratio and for the calculation of the reactor core produce value keff during a refueling cycle. The calculation was performed by using a set of SRAC program by comparing three types of fuel cell designs. Reactor Design A based on natural uranium could not reach criticality because of keff 1. Design B used the enrichment of uranium-235 by 9.5% to reach a critical condition at keff 1. The critical state was also achieved by Design C utilizing natural uranium, and plutonium 5.5% result value keff = 1.015 in the first year of burnup and continues to increase 1.083 in the tenth year without refueling. Moreover, plutonium can replace the uranium enrichment process.Penelitian ini menyajikan hasil perhitungan sel dan teras gas-cooled fast reactor (GFR) berbasis bahan bakar Uranium- Plutonium Nitride (U,Pu)N. Parameter Survey untuk hasil perhitungan sel bahan bakar terdiri dari kinf, level burnup, dan conversion ratio. Sedangkan pada perhitungan teras reaktor dihasilkan nilai keff untuk satu siklus pengisian bahan bakar. Perhitungan dilakukan dengan menggunakan seperangkat program SRAC dengan membandingkan tiga jenis desain sel bahan bakar yang berbeda. Reaktor Desain A berbasis uranium alam tidak mencapai kekritisan karena keff 1. Desain B menggunakan pengayaan uranium-235 sebesar 9,5% mencapai kondisi kritis pada keff 1. Keadaan kritis juga dicapai oleh Desain C yang memanfaatkan uranium alam dan plutonium 5,5% menghasilkan nilai keff = 1,015 di tahun pertama burnup dan terus meningkat hingga 1,083 pada tahun kesepuluh tanpa pengisian ulang bahan bakar. Pemanfaatan plutonium sebagai bahan bakar dapat menggantikan proses pengayaan pada uranium.

THE USE OF INTERACTIVE MULTIMEDIA (MACROMEDIA FLASH) TO INCREASE CREATIVE THINKING ABILITY OF STUDENTS IN BASIC PHYSICS SUBJECT
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.v13i2.4603

Students were intellectuals who should have the ability to think critically, one of which is the creative thinking skills. However, the students' limited ability in basic physics as well as the limitations of using a variety of multimedia resulted in basic physics final exam results lower than 6 on average from maximum value of 10. This leads to the lower creative thinking skills of students in basic physics. This research is a Quasi Experiment research on students in the first semester of academic year 2014/2015 which amounted to 38 people. This research is expected to increase creative thinking skills as well as lecturers and students activities. Data obtained from this study is the data of creative thinking skills of students and data on the observation of activity of lecturers and students. The data were analysed by using formula percentage of completeness of learning outcomes, gain indexes and statistical t-test. Based on the results of data analysis it is showed that the use of interactive multimedia (Macromedia Flash) can improve creative thinking skills of students.

IMPLEMENTATION OF GUIDED INQUIRY PHYSICS INSTRUCTION TO INCREASE AN UNDERSTANDING CONCEPT AND TO DEVELOP THE STUDENTS' CHARACTER CONSERVATION
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.v12i1.4264

The Measurement Concepts Instruction (MCI) is carried out by implementation of guided inquiry experiment model. The objectives is to develop the understanding concept and SMA students' character. The method used experiment educational research, with post- test control group design. The data of the understanding on property and measurement is collected by essay test and an observation sheets for students' character conservation. The subject of tutorial and non tutorial groups consist of 32 students respectively. The data were analyzed by t test and correlation analysis. The results showed a) the positive correlation between students' character and mastery on concept in high category (p = 0.002) and b) students' character conservation is significantly difference between tutorial and non tutorial groups. It can be concluded that the implementation of the guided inquiry experiment model to effective increase the understanding property and measurement and to develop students' character of senior high school students.Pembelajaran Fisika (PF) dilaksanakan melalui implementasi model eksperimen inkuiri terbimbing. Tujuan utama penelitian ini untuk mengungkap konsep besaran dan pengukuran dan mengembangkan nilai karakter konservasi siswa SMA. Metode penelitian ialah eksperimen kependidikan dengan post-test control group design digunakan. Subjek penelitian adalah kelompok perlakuan dengan tutorial dan non tutorial masing-masing 32 siswa. Data penelitian konsep besaran dan pengukuran dan nilai karakter konservasi dikumpulkan dengan tes uraian dan lembar observasi. Data dianalisis menggunakan uji t dan uji korelasi. Hasil penelitian yaitu: a) ditemukan korelasi positif antara nilai karakter konservasi dan penguasaan konsep besaran dan pengukuran pada kategori tinggi dan sangat signifikan (p = 0,002), dan b) diperoleh perbedaan penguasaan konsep yang signifikan antara kelompok tutorial dan non tutorial. Simpulan penelitian bahwa implementasi model eksperimen inkuiri terbimbing efektif untuk meningkatkan penguasaan besaran dan pengukuran dan mengembangkan nilai karakter konservasi siswa SMA.

PENGARUH BALIKAN FORMATIF TERINTERGRASI STRATEGI PEMBELAJARAN DIAGRAM VEE DAN KEMAMPUAN AWAL TERHADAP PENGUASAAN KONSEP SISWA
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.v12i2.4269

Penelitian ini bertujuan untuk mengetahui interaksi antara penilaian formatif dengan kemampuan awal terhadap penguasaan konsep siswa materi fluida statis, suhu, dan kalor. Metode penelitian menggunakan kuasi eksperimen faktorial 2 x2. Populasi penelitian ini adalah seluruh siswa kelas X MIA SMA Negeri 1 Singosari tahun ajaran 2014/2015 yang terdiri dari 5 kelas dengan jumlah 170 siswa yang akan mendapatkan materi fluida statis, suhu dan kalor. Sampel yang digunakan adalah kelas X MIA 1 dengan pembelajaran Diagram Vee-balikan formatif, sedangkan X MIA 3 menggunakan Diagram Vee-penugasan. Penguasaan konsep siswa diukur dengan tes penguasaan konsep pada materi fluida statis, suhu dan kalor. Hasil dari tes penguasaan konsep dianalisis dengan uji prasyarat analisis. Pada uji normalitas, kemampuan awal siswa dan penguasaan konsep siswa terdistribusi normal dengan nilai p (sig) 0,05. Pada uji homogenitas, kemampuan awal siswa dan penguasaan konsep siswa data homogen dengan p (sig) 0,05. Hasil uji hipotesis penelitian menggunakan uji Anova Two Ways, menunjukkan tidak ada interaksi antara kemampuan awal dan penilaian formatif terhadap penguasaan konsep.This study aimed to determine interaction among formative assessment, prior knowledge and the student mastery of the concept of static fluid, heat and temperature. This research used quasi experimental method using 2x2 factorial. The population was all students of grade X, science program of Senior High School Singosari, school year 2014/2015 which consists of five class with 170 students who will get material of static fluid, heat and temperature. The samples were grade X science 1 with Diagram Vee formative assessment and grade X science 3 with Diagram Vee assignment. Mastery of concepts were measured by using sumative test of static fluid, heat and temperature. Result of mastery of concepts were tested by using analysis precondition test. The normality test showed that prior knowledge and mastery of concepts of student was normally distributed with p (sig) 0,05. The homogeneity test showed that prior knowledge and mastery of concepts of student were homogenous with p (sig) 0,05. Result of hypothesis testing with Anova Two Ways showed no interaction among prior knowledge, formative assessment and mastery of concepts .

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