In Physics learning, the misconception is often experienced by students, including on Dynamic Fluid materials namely Continuity. This study aims to identify misconceptions that occur in the subject matter of the Continuity and identify the concept's weakness as the cause of the misconception. The study was conducted on 37 students in one high school in Bandung with one shoot research method. The diagnosis of student misconceptions is made using a four-tier diagnostic test instrument which is the development of a three-tier test instrument by adding a confidence level to the third tier. The results of the diagnosis showed that students who experienced misconceptions of 28%, students who understand some 35%, students who understand the concept only 6%, students who do not understand the concept of 30% and students who cannot be coded 0%. Based on the results of the observation on the learning process and the analysis on the third and fourth tier answers, misconception that occurs is generally due to the student's inappropriate logic that students assume that the fluid has a large speed has a large fluid pressure, and fluid has a small speed has a small fluid pressure.
Keywords: Misconception, Continuity, Four-Tier Diagnostic Test
AbstrakDalam pembelajaran Fisika, tidak jarang ditemukan adanya miskonsepsi yang dialami oleh siswa, termasuk pada sub-materi Fluida Dinamis yaitu Azas Kontinuitas. Penelitian ini bertujuan untuk mengidentifikasi miskonsepsi yang terjadi pada materi ajar Azas Kontinuitas serta mengidentifikasi kelemahan konsep sebagai penyebab terjadinya miskonsepsi tersebut. Penelitian dilakukan terhadap 37 siswa di salah satu SMA di kota Bandung dengan metode penelitian one shoot research. Diagnosis miskonsepsi siswa dilakukan menggunakan instrumen four-tier diagnostic test yang merupakan pengembangan instrumen three-tier test dengan menambahkan tingkat keyakinan jawaban pada tier ketiga. Hasil diagnosis menunjukkan bahwa siswa mengalami miskonsepsi pada sub-materi Azas Kontinuitas sebesar 28%, siswa yang paham sebagian 35%, siswa yang paham konsep hanya 6%, siswa yang tidak paham konsep sebesar 30% dan siswa yang tidak dapat dikoekan 0%. Berdasarkan hasil observasi dalam pembelajaran dan anlisis pada jawaban tier ketiga dan keempat, miskonsepsi yang terjadi umumnya disebabkan logika siswa yang kurang tepat yaitu siswa beranggapan bahwa fluida yang memiliki kelajuan besar memiliki tekanan fluida yang besar, begitupun sebaliknya.
As one of the foundations in the development of technology, physics must be supported by experimental activities that are able to develop a scientist's skills, such as scientific reasoning skills. Experiments with cookbook methods that have been conducted in various experimental activities are considered not able to maximize the potential of students because it does not provide wide opportunities for students to explore. One of the solutions to develop the scientific reasoning skills of physics students is the problem solving-based experiment approach. The research was conducted by one group pretest-posstest design to 20 physics students as research sample. The research instrument used is the scientific reasoning instrument test developed by Lawson which is known as Lawson Classroom Test of Scientific Reasoning (LCTSR) and student work sheet instrument (LKM) containing problems in daily life and questions about: tools and materials, prediction, exploration, measurement, analysis and conclusions. The results show all aspects of scientific reasoning being measured, i.e. 1) conservation of matter and volume, 2) proportional thinking, 3) identification and control of variables, 4) probabilistic thinking, 5) correlative thinking, and 6) hypothetic-deductive thinking has increased. Based on the result of research can be concluded that the problem solving-based experiment can improve the scientific reasoning skills of physics students.
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