Pengembangan Instrumen Tes Kemampuan Memecahkan Masalah Fisika Bunyi Berbasis Musik
Keywords:cord, problem solving skills, tone, frequency, akor, keterampilan memecahkan masalah, bunyi, frekuensi nada
Problem-solving is one of the fundamental skills in the 21st century. Students’ problem-solving skill is defined as students’ abilities to use their knowledge to solve the daily life problems. This study main goal is to develop a test instrument of junior high school students’ problemsolving skills on oscillation, wave, and sound concepts. The test items are arranged based on problem-solving skills indicator that proposed by (Doctor and Heller, 2009), there are problems visualization/description,
physics approach, mathematic procedure, and logically conclusion. This study used 4D (define, design, develop, and disseminate) model of research and development method. Ten test sets are designed based on five problem-solving skill indicators that grouped to each oscillation, wave, and sound sub concept. The result of instrument development shows all test items are valid through Pearson moment correlation coefficient test. Alpha Cronbach test the instrument shows the instrument reliability is 0.88 with the criteria of reliability is high. Based on expert judgment and data collections, the test instruments were well developed and could be used to measure students’ problem-solving skills on sound wave concepts.