<em>Physics is one of the sciences that studies concepts, laws, formulas, and also real and abstract phenomena. Too many formulas in physics that must be understood by students, make students feel difficult and less enthusiastic in learning physics. One of the material that makes students like to forget is the material about unit conversions where the number of units that need to be remembered are units of length, acceleration, speed, energy and others. To solve this problem, it is necessary to make an application in the android system that can help in unit conversion and easily accessible. The method that will be used in this research is Research and Development (R&D) using the ADDIE Model. Through the ADDIE Model cycle, they are: (1) Analysis, (2) Design, (3) Development, (4) Implementation and (5) Evaluation will be developed in this application. The results of the feasibility test from material experts are based on three aspects of assessment, namely the aspect of language, suitability of concepts and illustrations, which is in the feasible category with a total percentage of eligibility of 79,76%. Meanwhile, based on the results of the media expert feasibility test are based on three aspects of assessment, namely graphics, program processing and usage are in the very feasible category with a total percentage of eligibility of 88,89%.</em>
The UNO stacko game, is a game that is being loved by many people both of children and adults. In this study, The UNO game that will be developed is the UNO stacko game as a learning media. The UNO stacko game consists of 45 stackos with various colors and various command instructions. The colors in UNO stacko have five colors, including blue, yellow, red, green, and purple. Each color block is filled with test questions for understanding physics matter that are in accordance with the game instructions. Validation tests are carried out by media experts and material experts, where in each validation test there are several aspects tested. The average results from the results of validation tests of media experts and material experts regarding this interactive learning media were 88.19% and 88.69%. This percentage shows that interactive learning media that researchers make is included in good criteria. So this media can be used as a learning media that can be applied to physics learning for students.
ABSTRAKSetelah pandemi coronavirus-19 mulai mereda, kita kembali ke kehidupan normal namun dengan aturan-aturan baru. Begitupun dengan proses belajar mengajar di sekolah kembali melakukan pembelajaran luring atau langsung di sekolah. Permasalahan muncul saat siswa yang selama ini sudah lama belajar online, harus belajar secara langsung dengan bimbingan guru di sekolah. Guru harus Kembali menerapkan metode-metode pembelajaran agar kemampuan siswa meningkat termasuk kemampuan berpikir kritis. Terdapat beberapa metode dan pendekatan pembelajaran yang mampu memberdayakan kemampuan berpikir kritis siswa diantaranya adalah metode inkuiri terbimbing (guiding inquiry) dan metode Problem Based Learning (PBL). Tujuan dari penelitian adalah menerapkan kedua metode ini untuk melihat bagaimana pengaruhnya terhadap kemampuan berpikir kritis siswa. Penelitian dilakukan pada siswa kelas X SMAN 7 Bandar Lampung materi fisika suhu dan kalor. Desain eksperimen pada penelitian ini menggunakan bentuk Pre-Eksperimental Design dengan tipe One-Group Pretest-Posttest Design. Teknik analisis data yang digunakan yaitu uji normalitas data, uji hipotesis, uji N-Gain. Teknik pengambilan sampel didalam penelitian ini menggunakan teknik random sampling. Dari penelitian yang telah dilakukan, diperoleh skor N-gain rata-rata kemampuan berpikir kritis siswa pada kelas PBL sebesar 0,77 (kategori tinggi) dan kelas inkuiri terbimbing sebesar 0,68 (kategori sedang) mengindikasikan bahwa PBL lebih efektif digunakan sebagai upaya untuk meningkatkan kemampuan berpikir kritis siswa. Dari penelitian ini guru dapat menyesuaikan metode pembelajaran untuk meningkatkan kemampuan berpikir kritis siswa. Kata kunci: PBL; Inkuiri terbimbing; berpikir kritis. ABSTRACTAfter the coronavirus desease-19 pandemic subside, we are returning to normal life but with new rules. Likewise, the teaching and learning process at school returns to offline or direct learning at school. Problems arise when students who have been studying online for a long time have to learn directly with the guidance of teachers at school. Teachers must re-apply learning methods so that students' abilities increase, including critical thinking skills. There are several learning methods and approaches that are able to empower students' critical thinking skills, including the guided inquiry method and the Contextual Teaching Learning (CTL) method using the Problem Based Learning (PBL) approach. This research aims is to apply both methods to see how they affect students' critical thinking skills. The subject of research is X grade Student of SMAN & Bandar Lampung in Temperature and Heat physics matter. Experiment design in this research is Pre-Eksperimental Design especially One-Group Pretest-Postest. Data analysis technique used is the data normality test, hypothesis testing, and N-Gain test. The sampling technique in this study uses a random sampling technique. From results of this research, the average N-gain score of students' critical thinking skills in the PBL class is 0.77 (high category) and the guided inquiry class is 0.68 (medium category) indicating that PBL more effectively used as an effort to improve students' critical thinking skills. From this study teacher can adjust learning method to improve students' critical thinking skills. Keywords: PBL; guide inquiry method; critical thinking.
Penelitian ini bertujuan untuk menguji kestabilan estimasi parameter kemampuan pada Model Parameter Logistik Item Response Theory (IRT) berdasarkan panjang tes yang digunakan. Model Parameter Logistik yang digunakan dalam penelitian ini adalah Model 2 Parameter Logistik (2PL). Data yang digunakan adalah data simulasi yang dibangkitkan dengan menggunakan software Wingen, dengan ukuran sampel 1000 partisipan dengan variasi panjang tes yang digunakan adalah 20, 40, dan 60. Selanjutnya estimasi dilakukan dilakukan untuk masing-masing panjang tes tersebut, estimasi tersebut dilakukan dengan menggunakan software Wingen dengan replikasi sebanyak 10 kali. Berdasarkan hasil analisis pada hasil estimasi yang telah dilakukan dapat diketahui bahwa semakin panjang tes yang digunakan, estimasi parameter kemampuan model 2PL semakin akurat. Kata Kunci: Estimasi kemampuan, panjang tes, model logistik, IRT
The purpose of this research was to produce a contour map of ground motion acceleration (hazard map) for exceeded probability of 10% as an effort to mitigate earthquake tectonics in East Jakarta. This study uses the applied theoretical research method approach using PSHA software. The data used comes from data released from BMKG and the Geological Agency. Based on the map of the acceleration of soil movement (hazard map) in East Jakarta resulting from the PSHA process, for a return period of 500 years (10% PE 50 years) the PGA value generated is 0,03 g -0, 15 g. East Jakarta is a fairly stable region with a low level of earthquake hazard. Increasingly to the south and southwest, the PGA value is increasing due to close to subduction and volcanic activity. The PGA value in this study is almost the same as the revision of the Indonesian SNI earthquake map 03-1726-02 in 2010.
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