Paper Title
The Abstraction Process of Constructing Relation of Triangles in Terms of Conceptual Cognitive Style of Tempo to The Students Grade Viiith SMP Negeri 1 Balikpapan

Abstraction is an important process in mathematics education. Educators need to provide their cares and know the differences of students’ characteristics in view of abstract mathematical objects; one of them is cognitive style. The objective of this research was to describe the abstraction process of constructing relation of triangles in terms of conceptual cognitive style of tempo. This research employed a descriptive research with qualitative approach, the research’s subjects consisted of four students grade VIII at SMP Negeri 1 Balikpapan. The research’s results obtained weresubject of fast accurate gained 6 relation of triangles and in completing subject quickly without careful consideration and tend to write down everything which comes to mind on the answer sheet without thinking about it but the given solution tends to be precise. Subject of reflective gained 7 relation of trianglesand in completingsubjectthought first before answering a question so it takes a long time but the answers are delivered based on the results of mature information processing and tend to be precise. Subjects of impulsive gained 5 relation of triangles and in completing subjects tend to respond quickly, short but not clear and write everything that comes to mind on the answer sheets but the given solutions tend to be less precise. Subject ofslow inaccurate gained 5 relation of trianglesand in completing subjects tend to be long in responding and less precise in giving conclusions and do not expose it in detail. Keywords - Process of abstraction, triangle, conceptual cognitive style of tempo