The aim of the study is to investigate whether the activity based posters have an effect of on the ninth class students' academic achievements and the retention levels in their learning. The research was carried out with 60 students at one of the state schools in The Central Anatolia Region of Turkey in 2015-2016 academic year. Study-"Celebrities" unit teaching-took 6 weeks in both experimental group and control group. This study was conducted according to the "pre-test-post-test control group model" which is from quantitative research methods. The unit of "Celebrities" Achievement Test was developed by the researcher. These data collection tools were implemented at the beginning and the end of the study. Academic Achievement Test was re-implemented 21 days later after study in order to determine the retention levels in their learning. At the end of the research, it is detected that implementation of the activity based posters in English classes makes statistically significant difference for the benefit of experimental groups on the level of academic success.

The foremost role of active laerning tecniques is to make the learners active investigator and rediscoverers of knowledge in the educational environment. Likewise, one of the active learning techniques used in the classroom is activity-based posters. Poster presentations are an important teaching technique and successful poster presentations make it easy for students to learn lesson subjects as classroom experiences. The main purpose of this study is to determine the students' general feelings and thoughts about their experiences in the technique of poster design based on the Cooperative Learning Approach. For this study, a case study of qualitative research approach has been adopted. So, they were asked for their views after the technique of Poster Design based on the Cooperative Learning Approach. Consequently, by taking consider the students views, the poster design technique, an active learning technique based on cooperative learning approach, enables the students to participate actively in the course. It allows the teacher better and enjoyful learning environment. In this context, it both increases the students' academic successes and allows the students to develop positive feelings and emotions such as cooperation, accomplishment, respect, responsibility.