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The effects of 5e learning cycle model based on constructivist theory on tenth grade students’ understanding of acid-base concepts

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2007
Kılavuz, Yeliz
The main purpose of this study was to compare the effectiveness of 5E learning cycle model based on constructivist theory approach over traditionally designed chemistry instruction on ninth grade students’ understanding of acid-base concepts. Sixty tenth grade students from two classes of a chemistry course taught by the same teacher in Ankara Atatürk Anatolian High School 2004-2005 spring semester were enrolled in the study. The classes were randomly assigned as control and experimental groups. Students in the control group were instructed by traditionally designed chemistry instruction whereas students in the experimental group were taught by the instruction based on constructivist approach. Acid-Base Concepts Achievement Test was administered to both groups as a pre-test and post-test in order to assess their understanding of concepts related to acid-base. Students were also given Attitude Scale Toward Chemistry as a School Subject at the beginning and end of the study to determine their attitudes and Science Process Skill Test at the beginning of the study to measure their science process skills. The hypotheses were tested by using analysis of covariance (ANCOVA) and t-test. The results indicated that instruction based on constructivist approach caused significantly better acquisition of scientific conceptions related to acid-base and produced significantly higher positive attitudes toward chemistry as a school subject than the traditionally designed chemistry instruction. In addition, science process skill was a strong predictor in understanding the concepts related to acid-base.