Objective - The purpose of the research is to increase the motivation of student in SDN Duren Tiga especially for level II on learning mathematics in Geoboard. This research is to reform studying mathematics which has to purpose the active learning, creative, effective, fun and growing the motivation to all of the student in learning mathematics.

Methodology/Technique - The research methodology used in this research is action research with two cycles. There are 4 procedures on this research. First procedures are planning, acting, Observing and Reflecting. The subject of this research is the students of level II. There are 40 students which consist of 20 male and 20 female in 2011 – 2012. In this research, the researcher does as a teacher in SDN Duren Tiga, level II.

Findings - The result of this research shows on the increasing of the motivation on studying mathematics. There are three motivation classifications. First is the low motivation. Second is Middle motivation and the last is High motivation. The result shows that the low motivations in cycle I. Cycle II have a 0% from the total students. On cycle I, the middle motivation is 35% from the total student. Even though on cycle I, high motivations have 65% from total students and in the cycle II, the percentage decreases to 7.5% from total students. The totals of percentage increase to 92.5% from total students in cycle II. Based on the result, the researcher concludes that the geoboard media proves the increasing of the motivation in studying mathematics to students level II in SDN Duren Tiga.

Novelty - The usage of geoboard in this subject can help the student to understand the subject and it can be increasing the motivation students.

Type of Paper - Conceptual

Keywords: Motivation, Learning, Mathematics, Media Geoboard, Grade II.