Identifikasi Kesulitan Siswa SMA pada Materi Usaha-Energi

Abstract

This study identified student’s difficulty on doing test about work and energy. This study was conducted on 68 high school students at 11th grade who had took work and energy material. Type of this research was descriptive with survey method. Technique of collecting data was test with 15 items two tier's instruments which have been validated by expert. The student’s reasons in answering were used to identify possible causes of errors. Test result showed that the average student's test score is 50.65 with a scale of 100. Common difficulties for students were applying multiplication of the dot product force acting on objects and the movement objects when the movement of objects is presented through graphs, applying work-kinetic energy theorems, misinterpreting relations of gravity and height of objects on the incline, and determine the graph relation of energy with height object as a description of the movement of objects with par abolic paths and influenced by the external forces of the system. This finding can be used as a reference to overcome student difficulties through appropriate learning strategies.