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Improving 11th grade students' understanding of acid-base concepts by using 5e learning cycle model

Pabuçcu, Aybüke
The purpose of this study was to compare the effectiveness of instruction based on 5E learning cycle model over traditionally instruction on students’ understanding of acid-base concepts. Also, the effect of instruction on students’ attitude toward chemistry as a school subject and the effect of gender difference on understanding of acid-base concepts and attitudes toward chemistry were investigated. During the second semester of 2007-2008, 130 eleventh grade students from six classes of two different high schools attended this study. The classes were randomly assigned as control and experiment groups. Students in the control groups were instructed by traditional instruction whereas students in the experimental groups were taught by 5E model. Attitude Scale Toward Chemistry as a School Subject and Acid-Base Concept Test were administered as a pre and post-tests. In addition, Science Process Skill Test and Views on Science-Technology-Society instrument was utilized. The hypotheses were tested by using two-way analysis of covariance (ANCOVA) and two-way analysis of variance (ANOVA). The results revealed that 5E Model caused a significantly better understanding of acids and bases than the traditional instruction. In addition, these models of instruction developed the similar attitude toward science as a school subject. Science process skill was a strong predictor in understanding the concepts. On the other hand, no significant effect of gender difference on understanding the acids and bases and on students’ attitudes toward chemistry as a school subject was found. The results of Views on Science-Technology-Society gave a picture of the students’ views on nature of science.