Kimya Öğretmen Adaylarının Kimyasal Dengeye İlişkin Zihinsel Modelleri

Yıl 2018, Cilt: 15 Sayı: 1, 1081 - 1115, 29.11.2018

Betül Ekiz Kıran Elif Selcan Kutucu , Ayşegül Tarkın Çelikkıran , Mustafa Tüysüz

Öz

Araştırmanın deseni olgubilimdir. Katılımcılar
bir devlet üniversitesinin kimya öğretmenliği programının son sınıfında öğrenim
gören dört kimya öğretmen adayıdır. Veriler açık uçlu sorular ve yarı
yapılandırılmış görüşmeler yardımıyla toplanmış daha sonra betimsel analiz ve
içerik analizi kullanılarak analiz edilmiştir. Veri analizi sonucunda öğretmen
adaylarının sabit etki-tepki modeli, tek yönlü etki-tepki modeli (etki ile eş
yönlü tepki modeli, etki ile zıt yönlü tepki modeli) ve çift yönlü etki- tepki
modeli olmak üzere dört farklı zihinsel modele sahip oldukları bulunmuştur.
Bunun yanında öğretmen adaylarının çoğunluğu denge reaksiyonuna yapılan etki
ile dengenin ne yönde değişeceğini Le Chatelier prensibini doğru bir şekilde
kullanarak açıklayabilmiştir. Ancak denge reaksiyonun belirtilen yönde değişme
sebebini mikroskobik seviyeyi kullanarak açıklama konusunda yeterli seviyede
olmadıkları görülmüştür. Bu durum öğretmen adaylarının zihinsel modellerinin
bilimsel olarak kabul görmüş kavramsal modellerle tam uyumlu olmadığını
göstermektedir. Bu sebeple öğretmen adaylarına yönelik kimya öğretimi olayların
nedenleri mikroskobik seviyede sorgulatılarak yapılmalı ve böylece kavramsal
modellere uygun zihinsel modeller geliştirmeleri sağlanmalıdır. Bu
çalışmanın amacı kimya öğretmen adaylarının kimyasal dengeye etki eden faktörlerden
sıcaklık ve derişim değişiminin kimyasal dengeye etkisi ile ilgili zihinsel
modellerini açığa çıkarmaktır.

Anahtar Kelimeler

Kimyasal denge, Zihinsel modeller, Öğretmen adayı, Kimya eğitimi

Kaynakça

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