Analysis of student error in completion analytical geometry problems in circle and sphere material

Abstract

The purpose of this study is to identify student errors in solving the matter of circular material and spherical analytic geometry. The subject of this research is the 2nd semester students of the Mathematics Department at Universitas Negeri Padang. The type of this research is descriptive research. The type in this study is a qualitative approach. The data collection were obtained through documentation, tests and interviews. Data analysis was carried out in a qualitative descriptive. The results showed that the learning difficulties of students in the circle and sphere materials in terms of concepts, principles, and algorithms were: (a) Inability to remember, (b) Misclassification, (c) Error strategy, (d) Error calculation, (e) Difficulties in using algorithms. Teachers’ efforts to overcome student learning difficulties, namely: (a) provide training in varied questions (b) make a personal approach to students (c) repeat the questions that have been learned (d) provide direction to students to remember the formula learned (e) guiding and directing students to use the algorithm correctly. So that the teacher needs to use the right strategies and methods in teaching mathematical concepts.