The aim of this study is to investigate the effects of teaching animal physiology subjects, found in the content of General Biology Laboratory II course in the 2nd(second) grade of science teaching programme in Mu la University, through V-diagrams on students' success and retention level. The teaching was realized through laboratory method with the control group, whereas through V-diagrams with the experimental group. At he end of the application, The experiment group is more succesful than

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... rol group. It is suggested that using V-diagrams is more effective in laboratory than laboratory method. And with the former, students construct knowledge in their minds more influentially than the latter.