The purpose of the present laboratory study is to make it possible to internalize the concepts, principles, theories and the laws of chemistry taught in the courses by observing the experiments, give information about the methods used and various techniques and tools applied and introduce some substances and their characteristics. The purpose of the laboratory courses help students realize real and meaningful learning by forming relations between theoretical knowledge learned in the courses and laboratory studies.  The purpose of this study is to look at to what extent experiments conducted in laboratory setting are influential on students’ learning and emphasize the importance of think, explain, apply method. From the two groups of students of Science Teaching department four groups were constructed as Control 1 (C1), Experimental 1 (E1) and Control 2 (C2), Experimental 2 (E2) in two separate terms. Pre-test was administered to the groups and according to the results of this test, it was found that there is no significance difference between experimental groups and control groups (p<0.70).  Success scores obtained from the post-test, on the other hand, indicated a significant difference in favor of the E2 group where think, explain, apply method was used (p<0.85).