<![CDATA[One effort to improve the learning outcomes of natural science subjects, the researchers are interested in examining the effectiveness of cooperative learning. According to the theory of constructivism, learning is a construct knowledge based on prior knowledge. Thus, the ability to beginning students could be expected to affect the learning outcomes. Researchers applying two cooperative learning model type is the type Student Achievment Team Division (STAD) and Group Investigaton (GI) and the two classes. The technique used in this study is proces sampling techniques, and data collection and processing be conducted to obtain data on knowledge and attitudes. The instrument used was a test sheet and questionnaire. To analyze the data the normality test, homogeneity test, t test, and N-gain.Result of different of average from pretest and postest score get 60 percents for experiment class (STAD type) and 40 percents for control class (GI tipe). Result from average scores of questionnare get 70 percents for experiment class (STAD type) and 40 percent for control class (GI type). From the result of count above show that there is significant different and positive influence between knowledge result and student attitude which using coopertative learning model of STAD and cooperative learning model of GI.Keywords: Conservation, STAD learning model, GI, students' Knowledge, Attitudes of students, Mangrove Conservation]]>
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