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Article Citation - WoS: 3Context-Based Lessons With 5e Model To Promote Conceptual Understanding of Chemical Reactions and Energy Concepts(Sci Methodical Ctr-sci Educologica, 2015) Cigdemoglu, Ceyhan; Geban, OmerThis study explores whether the context-based approach with 5E model (CBA-5E) can lead to better understanding of chemical reactions and energy concepts when compared to conventional instruction (CI). Additionally, the study delves into the effect of treatment with regards to gender. Eleventh grade science-major classes with 175 students from two public high schools were enrolled. The experimental groups were treated with CBA-5E, the control groups as CI, the treatments were randomly assigned to the groups. The chemical reactions and energy concepts test, including the common alternative conceptions, was administered as pre- and post-test. The chemical reactions and energy achievement test, including conceptual and algorithmic problems, was administered as a post-test to the groups. Multivariate Analysis of Covariance (MANCOVA) was used for the analysis of the data, and the results revealed that CBA-5E was superior to CI on the students' conceptual understanding regarding these concepts regardless of gender difference.Article Citation - WoS: 27Citation - Scopus: 56Improving Students' Chemical Literacy Levels on Thermochemical and Thermodynamics Concepts Through a Context-Based Approach(Royal Soc Chemistry, 2015) Cigdemoglu, Ceyhan; Geban, OmerThe aim of this study was to delve into the effect of context-based approach (CBA) over traditional instruction (TI) on students' chemical literacy level related to thermochemical and thermodynamics concepts. Four eleventh-grade classes with 118 students in total taught by two teachers from a public high school in 2012 fall semester were enrolled in this particular study. The treatments were randomly assigned to the already formed classes; experimental groups were treated as CBA, the control groups as TI. Each teacher had one experimental and one control group. Open-ended contextual item sets were developed to assess students' chemical literacy level in thermochemical and thermodynamics concepts. The test was administered to both groups as a post-test at the end of the implementation. Students' responses to item sets were analyzed based on the rubric prepared as the answer key. Analysis of Covariance (ANCOVA) was used for interpreting the data. The results reveal that CBA is superior to TI on improving students' chemical literacy levels, implying that CBA, as a discussion platform for concepts through real-life experiences, has a significant role in increasing students' chemical literacy levels in abstract and difficult concepts regardless of the gender difference.
