The aim of this study was to examine the effect of Blended Cooperative Learning Environment (BCLE) in biology teaching on students' classroom community sense, their academic achievement and on their levels of satisfaction. In the study, quantitative and qualitative research methods were used together. The study was carried out with 30 students in 2012-2013 academic year and with 31 students in 2013-2014 academic year taking the course of "Seed Plants Systematics" in the Department of Biology Education in a state university in Turkey. The results obtained revealed that the students' classroom community sense developed and that they had a high level of academic achievement and satisfaction. The results were discussed considering the literature, and related suggestions were put forward.