Indonesia Conference Directory

The purpose of this study was to improve the mathematical problem solving abilities of class VIII G students of Tarogong Kidul 3 Junior High School in the material of Building Flat-Side Space. This study was a Classroom Action Research (CAR), which was conducted in 3 cycles and each cycle was held twice. Each cycle follows the stages: planning, action, observation / evaluation and reflection. The instruments used in this study include tests of mathematical problem-solving abilities, observation sheets of student activities, field notes and interviews. The results showed that the mathematical problem solving ability had increased from cycle I to cycle III, the average percentage of mastery of students mathematical problem solving abilities reached more than 65%. Judging from the average learning outcomes also increased from cycle I to cycle III. In the first cycle an average of 62.33, the second cycle averaged 66.83 and the third cycle averaged 68.33, while the percentage of students who reached KKM was 40% in the first cycle, 56.67% in the second cycle and 83 , 33%.