The need for students’ worksheets is felt urgent and very necessary, especially when the covid-19 pandemic. Therefore, through this research a Student Worksheet (SW) will be developed and the application to increase the understanding of the Sound Wave concept in Middle School students. The development of SW uses a Research and Development approach through the ADDIE model. SW limited trials were conducted on high school students. This research was conducted in 2 cycles of 4 meetings, each of which consisted of 4 stages: planning, implementation, observation and reflection. In addition, the feasibility of the learning tools used, the feasibility of learning, classroom management and students’ responses to learning were examined. Trials on limited samples, test student learning outcomes, teacher skills and student responses. Data analysis method used is descriptive method. Results that being analyzed with descriptive statistics it was found that the use of Lab Virtual PhET SW can improve student learning outcomes and teacher skills in the learning process in each cycle.

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This study aims to determine the relationship between learning styles and student learning outcomes in physics subjects. The research using survey techniques and documentation with using questionnaires and documentation method for data collection. Questionnaires are used to obtain data of learning style variables, while documentation is used to obtain data of learning outcomes variables. The results of data analysis, with the product moment correlation technique, show that there is a correlation of positive and significant relationship between learning styles and student learning outcomes in physics course. In addition, the results of the study also showed that the greatest contribution of learning styles to learning outcomes was in analytic and holistic learning styles.

This study aims to enhance teachers’ competence in conducting Classroom Action Research (CAR) in order to improve their professional services in handling the teaching and learning process. The researchers’ preliminary observations found that many teachers were still lack of competence in conducting correctly classroom action research following the guidelines, though some of them have conducted it several times. This problem is caused mostly by the factor of research proposal which is still unrecognazible. The qualitative method was applied in this study through training and intensive counselling on how to design CAR. The research findings focused on the qualification of research proposal in terms of language aspect and theoretical aspect. The language aspect focuses on sentence construction, paragraph construction, the use of language in the chapter of introduction and the chapter of theoretical bases. The theoretical aspect focuses on the accuracy of selection of theory, and the variety of theoretical sources. It is found that 25 % of CAR proposal contains recognizable sentences based on the form of S-P-O-K1-K2, 75 % of the proposals are recommended to be reviewed, 50 % of proposals contain regonizable paragraphs in terms of cohesion, and coherence. In the aspect of theoretical accuracy, 75 % of proposals contain theories which are in line with the research problem, and 25 % of proposals should be revised. Moreover, more than 95 % of proposals still depend on the books as the source of theory and only 5 % of proposals which cite from journal. It is concluded that the teachers’ competence in using scientific language must be improved and the source of theory must be upgraded through citing from recommended journal.

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