Improving Students’ Speaking Ability by Implementing of Problem Based Investigation Method at the Seventh Grade of MTsN Makassar

The research used classroom action research (CAR). The model of action research design used in this research is developed by Kemmis and McTaggart. This research was conducted to the students of MTsN Model Makassar in academic year 2014/2015 which consisted of 30 students in class VII-10. The instruments of this research were interview and test. The data analyzed through quantitative and qualitative analysis. The research focused on the implementation of problem based investigation method in improving students’ speaking accuracy and fluency. The research was conducted in two cycles and each cycle was done in three meetings. The result of the research showed that the students’ improvement from the first to the second cycle was improved highly. It was proved by the students’ success obtained by the students through test of pre test, cycle I, and cycle II, where students’ success in speaking ability test in the pre-test is 55.30., then in the first cycle is 62.60 and in the second cycle is 75.20 this was greater than in the first cycle