Understanding of concepts and scientific reasoning are an important components of the Physics learning process. One of the importance of understanding the concept and scientific reasoning is facilitating students in understanding and applying concepts obtained for everyday life. This article aims to describe students' understanding of concept and scientific reasoning on Static Fluid topic. This research used mixed methods explanatory design with 31 students of class XII IPA who have obtained Fluid Static topic. The instruments used are 10 items of essay for conceptual comprehension and 20 multiple choice items justified for scientific reasoning with substantial reliability in order, ie 0.702 and 0.745. The results show that students still have difficulty in understanding the concept of Fluid Static and still have a low scientific reasoning. Students' understanding of hydrostatic pressure sub topic is 18%, Pascal's Law of 21%, and Law Archimedes of 2.2%. Scientific reasoning aspects used in this research are mass conservation reasoning, proportional reasoning, variable control, reasoning probability, correlation reasoning, and hypotetical deductive reasoning. Sequentially, the low level of students' scientific reasoning on Static Fluid material in each criterion is indicated by the following percentages: 24%, 40%, 34%, 25%, 48%, and 20%. Based on the results obtained, that the difficulties of students in general exist on the determination of factors that affect the phenomenon of each sub-material. Abstrak: Pemahaman konsep dan penalaran ilmiah merupakan komponen penting dalam proses pembelajaran Fisika. Salah satu pentingnya dari pemahaman konsep dan penalaran ilmiah adalah dapat memberikan kemudahan siswa dalam memahami dan mengaplikasikan konsep yang diperoleh untuk kehidupan sehari-hari. Artikel ini bertujuan untuk mendeskripsikan pemahaman konsep dan penalaran ilmiah siswa pada materi Fluida Statis. Jenis penelitian ini menggunakan mixed methods explanatory design dengan subyek penelitian 31 siswa di kelas XII IPA yang telah memperoleh materi Fluida Statis. Instrumen yang digunakan dengan 10 butir soal esai untuk pemahaman konsep dan 20 butir soal pilihan ganda beralasan untuk penalaran ilmiah dengan besar reliabilitas secara berurutan, yaitu 0,702 dan 0,745. Hasil penelitian menunjukkan bahwa siswa masih mengalami kesulitan dalam memahami konsep Fluida Statis dan masih memiliki penalaran ilmiah yang rendah. Pemahaman konsep siswa pada sub materi tekanan hidrostatis sebesar 18%, Hukum Pascal sebesar 21%, dan Hukum Archimedes sebesar 2,2%. Aspek penalaran ilmiah yang digunakan dalam penelitian ini, yaitu penalaran konservasi massa, penalaran proporsional, kontrol variabel, penalaran probabilitas, penalaran korelasi, dan hypotetical deductive reasoning. Secara berurutan rendahnya tingkat penalaran ilmiah siswa pada materi Fluida Statis di masing-masing kriteria, ditunjukkan dengan persentase sebagai berikut: 24%, 40%, 34%, 25%, 48%, dan 20%. Berdasarkan hasil yang diperoleh, bahwa kesulitan siswa secara umum terdapat pada penentuan faktor-faktor yang berpengaruh pada fenomena masing-masing sub materi.
Impulse momentum theorem is one of the fundamental principles of physics, especially in mechanics. Therefore, students' understanding of impulse and momentum will contribute to their success in learning physics. This study exposed common students difficulties in solving problems related to impulse and momentum. The subjects consisted of 175 students of a Senior High School in Malang, 70 students of grade XI who recently learned about impulse and momentum and 105 students of grade XII who relearned the topic for national examination preparation. The data were gathered using multiple-choice test with open explanation and confidence rating scale. The study concluded that the students' difficulties were not only caused by their lack understanding of the concepts but also by their deficiency in using vectors.
This research is aimed to describe students’ problem-solving skill in phenomenon-based experiential learning especially in the subtopics of temperature and expansion. The problem-solving skill is one of the vital skills in physics learning that should be applied in measuring students’ understanding level. This research used a mixed-method approach with research design of an embedded experimental model for 32 eleventh graders of State Senior High Schools in Malang, East Java, Indonesia. The data were collected by pretest and posttest using tests and interview. The result shows that there is an improvement of students’ problem-solving skill after being taught by using phenomenon-based experiential learning. The calculation result of the N-Gain score showed the improvement of students’ problem-solving skill on a moderate category and the calculation result of d-Cohen effects size in on strong category. Meanwhile, the result of the qualitative calculation showed that students’ problem-solving skill is improved from beginner category to expert category that is 62.5%. The students’ problem-solving skill should be intensively trained by using contextual scientific problems in daily life.
<p><strong>Abstract:</strong> This study aims to determine the problem solving abilities of high school students in solving physics problem topic working and energy. A total of 64 respondents solved physics problem about work and energy which consisted of four questions. The students' answers were evaluated using a rubric consisting of five indicators, namely useful description (UD), physics approach (PA), specific application of physics (SPA), mathematical procedures (MP), and logical progression (LP). The data analysis technique used qualitative descriptive. The results of the analysis show that the score of students' problem solving abilities is in a sufficient category, with the dominant score on indicators UD, PA and SPA. Students get poor score criteria on MP and LP indicators. In this case, students experience some difficulties, among others, students' mistakes in applying physics concepts in mathematical equations, students' mistakes in using equations that are not relevant to the problems presented and students' mistakes in using calculations that do not focus on the problem presented.</p><strong>Abstrak:<em> </em></strong>Penelitian ini bertujuan untuk mengetahui kemampuan pemecahan masalah siswa SMA dalam memecahkan persoalan usaha dan energi. Sejumlah 64 responden mengerjakan soal usaha dan energi yang terdiri atas empat soal uraian. Hasil jawaban siswa dikoreksi dengan menggunakan rubrik yang terdiri atas lima indikator, yaitu <em>usefull description </em>(UD)<em>, physics approach</em> (PA)<em>, spesific application of physics </em>(SPA)<em>, mathematical procedures </em>(MP)<em>, </em>dan <em>logical progression </em>(LP). Teknik analisis data menggunakan deskriptif kualitatif. Hasil analisis menunjukkan bahwa skor kemampuan pemecahan masalah siswa berada dalam kategori cukup, dengan dominan skor pada indikator UD, PA dan SPA. Siswa mengalami kriteria kurang baik pada indikator MP dan LP. Dalam hal ini, siswa mengalami beberapa kesulitan, antara lain, kesalahan dalam mengaplikasikan konsep dalam persamaan matematis, menggunakan persamaan yang tidak relevan dengan permasalahan yang dipaparkan menggunakan perhitungan yang tidak fokus pada problem yang disajikan.
Community service has been carried out in RW 12 Kel. Merjosari Malang to increase the potential and participation of the community in health environment. The increase in the number of Covid-19 patients in Malang Raya, about 3,378 people, presents that the Covid-19 virus has increased drastically both number of patients confirmed positive and patients who died. The problems faced by partners are not understanding the Covid-19 disease, weak resources, limited funds, and difficulty accessing information. The method is socialization by conducting discussions, optimizing citizen resources, monitoring and evaluation. The result is conducting discussions, developing resources, providing training, providing counseling and assistance. Citizen involvement is to provide a place to install spraying equipment, maintain spraying facilities, provide a place to conduct training, provide human resources ready to be trained voluntarily. Citizens' anxiety and restlessness were slightly reduced by increased community understanding. Citizens give a positive assessment of service. This is proven by the percentage of residents giving a positive rating on average 95.68%, consisting of 95.33% giving a positive response, and 4.67% giving a negative response.
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