Abstract:
Learning Mathematics in Elementary School aims to develop the ability to calculate, measure, reduce, and using mathematical formulas needed in everyday life. This is in line with one of the goals given the basic school mathematics to solve problems that include the ability to understand the problem, devise a mathematical model, solve the model and interpret the obtained solution. But based on the results of three daily tests Mathematics semester grade students at in class V SDN 003 Sotol, Sub District of Langgam, Pelalawan District even semester of academic year 2011/2012 obtained the fact that the percentage of students who achieve mastery Minimum criteria is low. Therefore, to fix it, conducted a study in order to improve student learning outcomes by using cooperative learning, structural approach Numbered Heads Together (NHT). The research involved students of class V SDN 003 Sotol totaling 12 people consisting of 3 boys and 9 girls, which began on May 6 to June 3, 2012. This research used two cycles, the research instruments such as syllabus, Lesson Plans, and the Student Worksheet. Data collection instrument in this research consisted of the tests and observation sheets. Data collection techniques used are observation techniques and testing techniques. Data were analyzed using descriptive statistical analysis. The results in the first cycle found that the percentage of students who achieve KKM is 100% and the second cycle was 100%, which increased the percentage of prior actions that only 41.7%, and the award based on the first cycle of all teams awarded a super team, while in the second cycle of two (A and C) teams awarded great team and one teams (B) awarded the super team. The conclusion of the study showed that the implementing cooperative learning model of numbered heads together structural approach could improving mathematics learning outcomes of students.
