Proses berpikir siswa dalam menyelesaikan masalah Matematika berdasarkan teori pemrosesan informasi

This study aims to describe the thinking process of students in mathematic’s problem solving based on information processing theory. This research is a descriptive research with qualitative approach. This research was conducted at favorite SMAN Surabaya class XI-MIA 4.Subjects were selected based on the Mathematics Ability Test (TKM) score and interviews with teachers of mathematics studies. Subjects in this study consisted of two students with high, medium, and low math skills. The results showed that all students’ receiving the information or stimulus in the form of problems by the sensory registers through the sense of sight and hearing.Then attention occurs after reading the problem and arise perception when understanding the problem. Perception occurs when the students doing the retrieval the required concepts from long term memory to solve the problem.The different doing retrieval in each students are students with high math skills experience forgotten lost to a particular concept.While for students who are capable of moderate mathematics often suffer an error or retrieval failure in explaining the concept related to the meaning of the elevation angle.Then for students with low math skills often experience errors and forget because the concepts needed short term memory is not stored well by long term memory.