Main Article Content
The purpose of the study is to reveal the effect of cooperative learning on the attitudes and reflective thinking skills of the students’ in the English course. The study was carried out for 5 weeks with 66 students studying at the 10th grade at an Anatolian high school in the district of Karadeniz Ere?li in Zonguldak during the fall term of the 2015-2016 academic year. The design of the study was ‘nonequivalent control groups pre-test post-test’ which is one of the quasi-experimental designs. The scale of attitude towards English course and the scale of reflective thinking were used as instruments of the study which were applied as a pre-test and as a post-test. According to the results, it was concluded that cooperative learning is significantly and positively more effective on students’ attitudes and reflective thinking skills than the traditional method. This study was produced from a master thesis written by the first author under the supervision of the second author.