The research aims to develop and to assess alternative conceptions of second year's Sundanese scholars on light wave with Multitier Open-ended Light Wave Instrument (MOLWI). The research method has been utilized by the 3D+1I model (Defining, Designing, Developing and Implementing). Participants who involved in this research are 26 of second year's scholars (11 male students, namely "Ujang" and 15 female students, namely "Eneng", the average age of them are about 17 years of Sundanese-tribe). The MOLWI consist of 15 questions which has been already analysed by Rasch analysis. Students' conceptions have ever been categorized regarding to the six categories, that are; Sound Understanding (SU), Partial Positive (PP), Partial Negative (PN), Misconception (MC), No Understanding (NU), and No Coding (NC). The research results show that the PN category has the highest percentage about 86 percent in the number six. The lowest category is the NC category about four percent in the number of 3, 5, 7 and 13. While Rasch analysis explains the Sundanese-scholars only answer confidently on easy questions and not misconceptions.
This study aimed to expand PDEODE*E Tasks with the Think-Pair-Share model for reconstructing students' misconceptions on work and energy. The PDEODE*E Tasks with Think-Pair-Share model implemented for students who had not taught the concept of work and energy. The participants include 36 students of tenth grade (22 girls and 14 boys, whose ages ranged from 15 to 16 years) at a senior high school in Bandung, Indonesia. Students' misconceptions evaluated by administering an Energy and Momentum Conceptual Survey (EMCS) comprised of 18 items in the form of four-tier, as pre-and post-test. Furthermore, students' thoughts also elicited using worksheets of seven PDEODE*E tasks. A qualitative approach is used to analyze the test and worksheets. The data analysis had mostly focused on work and energy concepts such as work, energy, and conservation of energy. The findings suggested that PDEODE*E Tasks with Think-Pair-Share model improved students' conceptual understanding and reduced most of their misconceptions despite a little misconception motionless occurred. Teachers can use PDEODE*E tasks with the Think-Pair-Share model to reconstruct students' misconceptions.
This study aimed to create a teaching material using an application with a Graphical User Interface (GUI) provided on MATLAB. This teaching material is intended for Physics subject. Creating a GUI with MATLAB was made using the guide facility provided in MATLAB. The MATLAB GUI has a relatively small file size so that it can speed up the running program commands. This research aimed to create an application that is easy and effective to be used by users without having to understand the complexity of computing MATLAB. The application consists of a main menu, a GUI that can be run according to the materials needed by the users, as well as a menu to close the application. The physical matter contained in it is planetary motion (Kepler’s law). Physics learning materials that can be used as a reference in running the GUI program, e-modules containing procedures for creating the GUI by using MATLAB for learning, as well as the MATLAB source code used in every programming. For further research, the author expects the development of this study by using the e-module contained in the application as a material for creating GUI MATLAB.
Students’ conceptions an important role in achieving learning goals, especially in the concept of light waves in physics. The aim of this research is to measure students’ conceptions of light waves. This research is a survey with 519 respondents (K-11 students with an age of about 17 years old consisting of 399 females named “Mba’e” and 120 Males named “Le” calling in Central Java). The instrument used is the seven questions from MOLWI that have been developed. The research results are categorized based on six conception categories: Sound Understanding (SU); Partial Positive (PP); Partial Negative (PN); Misconception (MC); No Understanding (NU); and No Coding (NC). The results show that the concept of students in Central Java on the concept of light waves is in the category SU = 29%, PP = 3%, PN = 26%, NU = 4%, MC = 27%, and NC = 0%.
Assessment is an important component in education that always needed. To improve the quality of education can be done by improving assessment learning quality and system. This study aims to determine the performance of students of grade X SMA N in Bandung West Java Indonesia school with 34 participants on a two-dimensional collision concept. This research is descriptive research which is conducted to examine the condition and situation that is happening, so that gives a fact-based description found in the school in other to find information factually. Problem studies that analyzed are the student’s performance after using PhET simulations on two-dimensional collision concept. The instrument utilized in this study is a written test in the form of students’ worksheets of momentum and impulse. Student worksheets test shows the average percentage on student performance in understandings concept of two-dimensional collision concept is 67.14%. These data indicated that student learning performance in good category. Learning by using virtual laboratory can provide more meaningful learning especially in physics concept that cannot be presented and observed directly in daily life.
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