Conducted research comparing student achievement and retention in learning. Group learning science chemistry between teaching based on constructivism Swiss absorbed with normal results showed that teaching. Effectiveness Index of lesson plans based on constructivism Swiss absorption of 0.68 indicates that the student has academic achievement increases of about 68 percent, and the students who studied along constructivism Swiss effect. after learning achievement is higher than that in the normal course of a statistically significant level. 05.
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