Şenol ŞEN, Lütfiye VAROĞLU, Ayhan YILMAZ

Üniversite Öğrencilerinin Reaksiyon Hızı ve Kimyasal Denge Konusundaki Bilişsel Yapılarının İncelenmesi

Bu çalışmanın amacı üniversite öğrencilerinin reaksiyon hızı ve kimyasal denge konuları ile ilgili bilişsel yapılarını Kelime İlişkilendirme Testi (KİT) ile belirlemek ve kelime ilişkilendirme testi sonuçları ile açık uçlu soruların sonuçları arasındaki ilişkiyi incelemektir. Çalışma, bir vakıf üniversitesinde, Genel Kimya II dersi kapsamında, birinci sınıfa devam eden 77 öğrenci ile yürütülmüştür. Veri toplama aracı olarak, reaksiyon hızı ve kimyasal denge konuları ile ilgili araştırmacılar tarafından hazırlanmış olan açık uçlu sorular ve kelime ilişkilendirme testi kullanılmıştır. Öğrencilerin bilişsel yapılarının ortaya çıkartılmasında kesme noktası yönteminden yararlanılmıştır. Verilerin analizinde; içerik analizi, Kruskal Wallis testi ve korelasyon analizi kullanılmıştır. Çalışmanın sonunda, öğrencilerin KİT toplam puanları ile açık uçlu sorulardan aldıkları toplam puanlar arasında yüksek düzeyde anlamlı bir ilişkinin olduğu bulunmuştur. Kruskal Wallis testi sonuçlarına göre, altı farklı bilgi düzeyine göre gruplandırılmış öğrencilerin KİT toplam puanları arasında anlamlı bir farklılık olduğu tespit edilmiştir. Sonuç olarak, kelime ilişkilendirme testlerinin öğrencilerin bilişsel yapılarının ortaya çıkarılmasında alternatif bir değerlendirme aracı olarak kullanılabileceği söylenebilir.

Anahtar Kelimeler:

kimyasal denge, reaksiyon hızı, bilişsel yapı, üniversite öğrencileri

Examination of Undergraduates’ Cognitive Structures on Reaction Rates and Chemical Equilibrium

The aim of this study was to determine undergraduate students' cognitive structures about reaction rates and chemical equilibrium through word association test and to analyse the correlations between the results obtained in Word Association Test (WAT) and in open-ended questions. The research was conducted in a foundation university within the framework of General Chemistry II course with the participation of 77 first year students. Open-ended questions and word association test about the subjects of reaction rates and chemical equilibrium prepared by the researchers were used as a data collection tools. The method of cut-point was employed in revealing students’ cognitive structures. Content analysis, Kruskal Wallis test and correlation analysis were used in analysing the data. Consequently, it was found that there were high-level significant correlations between students’ total WAT scores and the total scores they had received from open-ended questions. Significant differences were found between students’ total WAT scores according to Kruskal Wallis test results at six different levels of knowledge. As a result, it may be said that word association test can be used as an alternative assessment tool in revealing students’ cognitive structures.

Keywords:

chemical equilibrium, reaction rate, cognitive structure, undergraduates,

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