Students’ error analysis in solving three dimensional problems in terms of spatial ability

There are still many students who have difficulty in solving three-dimensional problems in terms of spatial ability so that students make mistakes. Because of that, the purpose of this research is to find out the types of errors, the factors causing the errors, and the solutions to the mistakes made by the students. The research method used is the descriptive method with a qualitative approach. The research subjects were 27 students of class XII at MAN 1 Cianjur school. The results showed that the types of errors made by students were inappropriate data, inappropriate procedures, omitted data, omitted conclusion, undirected manipulation, skill hierarchy problem, and above others. The type of error that is mostly made by students is the improper procedure with a percentage of 62.03% in the very high error category. For the factors causing the error, among others, because students cannot illustrate the picture that has been described in the problem, do not understand the concept, are not familiar with different questions and are not careful in calculating mathematical operations. Thus, the solution that can be used in overcoming errors can be using the Problem Based Learning (PBL) learning media model during the three-dimensional learning process. Learning media that can be used are teaching aids and applications such as Wingeom and Geogebra.