A. Problem Background
Mathematics is formed as a result of human thought associated with the ideas, processes, and reasoning (Ruseffendi ET, 1980: 148). Mathematics is viewed by most teachers as well as students or subjects difficult to learn or teach. Difficult to study because many less encouraging results for each student after following the process of learning or completing a test or exam math. The results of students' mathematics learning is always lower than the results of student learning in other subjects. Teachers teach difficulties due to various efforts from planning, implementation and evaluation carried out do not work as expected.