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Development and Students’ Perception on Teaching Aids of Photoelectric Effect Experiment Using Leds Hartono Bancong; Ana Dhiqfaini Sultan; Subaer Subaer; Muris Muris
Jurnal Pendidikan Fisika Vol 7, No 3 (2019): PENDIDIKAN FISIKA
Publisher : Universitas Muhammadiyah Makassar

The photoelectric effect experiment generally uses a very sophisticated and expensive apparatus. Some high schools and even universities in Indonesia cannot afford to conduct this experiment because of the high price of the apparatus. The purpose of this study was to develop a user-friendly, and cost-effective teaching aids which can be used to demonstrate the concepts of modern physics related to the photoelectric effect. The stages of this study employed the Four-D model, namely define, design, develop, and disseminate. Based on experts and practitioner evaluation, the developed teaching aids and practicum devices of photoelectric effect experiment were found to be valid and reliable. The results of the experiment by using this developed teaching aids of the photoelectric effect showed that there is a linear relationship between the stopping potential and the frequency of light emitted by the LED. These results are consistent with Millikan's experimental results, the first physicist who succeed in proving Einstein's hypothesis of the photoelectric effect, that in the photoelectric effect the stopping potential does not depend on the intensity of light but depends only on the frequency of light. In this study, the Planck’s constant value obtained is 6.408x10-34 J.s. Although this value is slightly smaller than the accepted value of Planck's constant that is 6.626x10-34 J.s, it is good enough considering the instrumental error occurred during the measurement of current and voltage. Furthermore, the students’ perception of the developed teaching aids and practicum devices of the photoelectric effects experiment are 74.9% (good) and 80.2% (very good), respectively. This indicates that the photoelectric effect experiment teaching aids and practicum devices that have been developed can be used to demonstrate and prove the concepts of modern physics related to the photoelectric phenomena correctly.Keywords: Teaching Aids, Photoelectric Effect, Students’ Perception

Penggunaan Metode Creative Problem Solving (CPS) untuk Meningkatkan Pemahaman Konsep Fisika di Kelas XI IA2 SMA Negeri 2 Sinjai Arni Idawati; Muris Muris; Ahmad Yani
Jurnal Pendidikan Fisika Vol 6, No 2 (2018): PENDIDIKAN FISIKA
Publisher : Universitas Muhammadiyah Makassar

Penelitian ini bertujuan untuk untuk mengetahui apakah penggunaan metode Creative Problem Solving (CPS) dapat meningkatkan pemahaman konsep fisika peserta didik kelas XI IA di SMA Negeri 2 Sinjai tahun ajaran 2015/2016. Penelitian ini merupakan penelitian tindakan kelas. Penelitian ini dilaksanakan di SMAN 2 Sinjai tahun ajaran 2015/2016 kelas XI IA2 yang berjumlah 24 siswa. Pengambilan data di lakukan dengan tes pemahaman konsep fisika pada akhir siklus. Dari data yang terkumpul kemudian dianalisis secara kuantitatif dan kualitatif. Hasil penelitian yang dicapai setelah dianalisis yaitu : (1) pada siklus I, skor rata-rata hasil belajar fisika peserta didik 59,94 dengan standar deviasi 10,76 (2) pada siklus II skor rata-rata hasil belajar adalah 74,22 dengan standar deviasi 8,90. Hasil belajar peserta didik dengan menggunakan metode creative problem solving (CPS) mengalami peningkatan dari siklus I ke siklus II, demikian pula dengan peningkatan kemampuan konsep fisika pada penilaian afektif peserta didik pada siklus I berada pada kriteria cukup, dan kemudian meningkat pada siklus II menjadi kriteria baik. Berdasarkan analisis hasil penelitian ini dapat disimpulkan bahwa kemampuan pemahaman konsep fisika peserta didik kelas XI IA2 SMA Negeri 2 Sinjai dapat ditingkatkan melalui penggunaan metode creative problrm solving (CPS).Kata kunci: Creative Problem Solving (CPS), dan pemahaman konsep fisika. This study aimed to determine whether the use of methods of Creative Problem Solving (CPS) to enhance understanding of the concepts of physics students in class XI IA SMA Negeri 2 Sinjai the academic year 2015/2016. This research is a class act. The research was conducted at SMAN 2 Sinjai the academic year 2015/2016 class XI IA2 amounting to 24 students. Data retrieval is done to test understanding of the concept of physics at the end of the cycle. From the data gathered are then analyzed quantitatively and qualitatively. The results arrived at after analysis, namely: (1) in the first cycle, the average score of students learning outcomes physics 59.94 with a standard deviation of 10.76 (2) in the second cycle the average score was 74.22 with the learning outcomes standard deviation of 8.90. The study of students by using creative problem solving (CPS) has increased from the first cycle to the second cycle, as well as the upgrading of the physics concepts on the assessment of affective learner in the first cycle is at sufficient criteria, and then increased in the second cycle be the criteria good. Based on the analysis of the results of this research can be concluded that the ability of understanding the concepts of physics students of class XI SMA Negeri 2 Sinjai IA2 can be enhanced through the use of creative methods problrm solving (CPS).Keywords: Creative Problem Solving ( CPS ) , and the understanding of physics concepts.

The Development of Physics Teaching Aids to Demonstrate the Intensity of Blackbody Radiation As a Function of Temperature Hartono Bancong; Ana Dhiqfaini Sultan; Subaer Subaer; Muris Muris
Jurnal Pendidikan Fisika Vol 7, No 1 (2019): PENDIDIKAN FISIKA
Publisher : Universitas Muhammadiyah Makassar

The purpose of this study was to develop teaching aids of blackbody radiation experiment and practicum devices based on modified free inquiry which are valid and reliable. This teaching aids was designed to demonstrate the relationship between the intensity of radiation and the absolute temperature of a blackbody (the law of Stefan-Boltzmann). The principle of this experiments is the amount of current will flow from the voltage source and enter to the black box. The black box will absorb and emit radiation. There is a nichrome wire inside the black box that will be light up, heat and emit radiation when electrically flowed. The emitted heat will be measured by temperature sensors using thermocouple located outside the black box. Based on experts and practitioner evaluation, the developed teaching aids of blackbody radiation experiment and practicum devices based on modified free inquiry were found to be valid, and reliable. The results of the experiment showed that the intensity of blackbody radiation was directly proportional to its temperature. This result is consistent with the law of Stefan-Boltzmann. Furthermore, the average of students’ perception of the developed teaching aids and practicum devices of blackbody radiation are 74.92% (good) and 80.17% (very good) respectively. This indicates that the teaching aids and practicum devices that have been developed can be used to demonstrate and prove the modern physics concepts related to blackbody radiation.Keywords: Teaching Aids, Stefan-Boltzmann’s law, Blackbody RadiationPenelitian ini bertujuan untuk mengembangan alat peraga eksperimen radiasi benda hitam dan perangkat praktikum fisika berbasis modified free inquiry yang valid dan reliabel. Alat peraga tersebut dirancang untuk mendemonstrasikan hubungan antara intensitas radiasi benda hitam dengan suhu mutlak yang dipancarkannya (Hukum Stefan-Boltzmann). Prinsip kerja dari alat peraga tersebut adalah arus akan mengalir dari sumber tegangan dan masuk ke dalam kotak lubang hitam. Kotak ini berfungsi untuk menyerap dan memancarkan radiasi. Di dalam kotak terdapat kawat nicrom yang akan menyala dan memancarkan radiasi ketika dialiri arus listrik. Panas yang dipancarkan akan diukur oleh termokopel radiasi yang berada di luar kotak. Berdasarkan penilaian validator, alat peraga eksperimen radiasi benda hitam dan perangkat praktikum fisika berbasis modified free inquiry yang telah dikembangkan dinyatakan valid dan reliabel. Hasil uji coba menunjukkan bahwa intensitas radiasi yang dipancarkan oleh benda hitam berbanding lurus dengan temperaturnya yang sesuai dengan hukum Stefan-Boltzmann. Selanjutnya, rata-rata persepsi praktikan terhadap alat peraga eksperimen radiasi benda hitam dan perangkat praktikum yang telah dikembangkan secara berturut-turut adalah 74,92% (baik) dan 80,17% (sangat baik). Hal ini mengindikasikan bahwa alat peraga dan perangkat praktikum yang telah dikembangkan dapat digunakan untuk mendemonstrasikan dan membuktikan konsep-konsep fisika modern yang berhubungan dengan radiasi benda hitam.Kata kunci: Alat Peraga, Hukum Stefan-Boltzmann, Radiasi Benda Hitam

Penerapan Strategi Dynamic Problem Solving untuk Menumbuhkan Keterampilan Proses Sains Mahasisw Abd. Haris; Muris Muris; Herman Herman
Indonesian Journal of Educational Studies Vol 19, No 2 (2016)
Publisher : Universitas Negeri Makassar

The study aims to know the description of science process skill for basic electronics subject at physics teacher candidate after implemented dynamic problem solving strategies (DPSS), as a novel alternative, to improve teaching and learning process of Physics. This research is included as a pre-experimental with using One Group Posttest Design. The research subject was 23 students of Physics Education Study Program Semester IV for academic year 2015/2016 who take lecturing subject of Basic Electronics. It is concluded that science process skill as follows: 1) students maximum score was 85; 2) minimum score was 80; and 3) the average score was 87,5. In general, the mastery of physics concept and mathematical ability of students especially in basic electronics subject were in good category.

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