Assessment of Pre-Service Teachers' Misconceptions in Geometrical Optics via a Three-Tier Misconception

Bu çalışma öğretmen adaylarının üniversitede geometrik optik konularını işlemeden önce ışık, gölge ve ayna görüntüleri ile ilgili kavram yanılgılarını tespit etmek amacı ile gerçekleştirilmiştir. Fen Bilgisi Öğretmenliği ve Bilgisayar ve Öğretim Teknolojileri Eğitimi bölümü birinci ve ikinci sınıflarında öğrenim gören 317 öğretmen adayı çalışmanın katılımcılarını oluşturmuştur. Adayların kavram yanılgıları, revize edilmiş üç-aşamalı geometrik optik kavram yanılgısı testi ile ölçülmüş ve testin geçerlilik ve güvenilirlik analizleri tekrar yapılmıştır. Sonuçlar, revize edilen testin öğretmen adaylarının ışık, gölge ve düzlem ayna konularındaki kavram yanılgılarını tespit etmek için geçerli ve güvenilir bir ölçüm aracı olduğunu göstermiştir. Testin iç güvenilirlik katsayısı olan Croanbach alfa değeri 0,65 olarak bulunmuştur. Elde edilen sonuçlar, öğretmen adaylarının çoğunun geometrik optik dersleri öncesinde ışık, gölge ve düzlem ayna görüntüleri ile ilgili kavramsal anlama düzeylerinin oldukça zayıf ve 12 yaygın kavram yanılgısına sahip olduklarını göstermiştir. Bu çalışmanın sonuçlarının; geometrik optik konularını anlatan öğreticilerin, fen bilgisi ve bilgisayar öğretmenliği lisans programlarındaki öğrenciler için öğretim planlarını hazırlamalarında yararlı olacağı düşünülmektedir

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