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Çalışmada, periyodik tablo konusu için önem arz eden ve konu ile ilişkili metal-ametal, asit-baz, iyonik-kovalent, proton sayısı-elektron sayısı ve anyon-katyon kavram çiftlerine ilişkin ortaöğretim öğrencilerinin kavramsal anlamalarını belirlemek için iki aşamalı kavram testi geliştirilmiştir. Çalışmaya yaşları 13 ile 17 arasında değişen, 334 ortaöğretim öğrencisi katılmıştır. Çalışmada iki aşamadan oluşan 30 soruluk Kimya Kavram Tanı Testi (KKTT) kullanılmıştır. KKTT’nin kapsam ve görünüş geçerliği için uzman görüşü alınmıştır. Testin toplam puanlarına göre alt %27 ve üst %27’lik gruplar belirlenmiştir. Madde analizleri yapılarak madde güçlük ve madde ayırıcılık indeksleri tespit edilmiş ve 13 soru testten çıkarıldıktan sonra kapsam geçerliliği için tekrar uzman görüşü alınmıştır. Testin güvenirlik analizleri için istatistiksel analizler yapılarak, 17 soruluk testin ilk aşaması için güvenirlik katsayısı .857, birinci ve ikinci aşaması için .908 olarak hesaplanmıştır.
The study aims to develop two-tier diagnostic test to determine the conceptual understanding of secondary school students about concept pairs related with the periodic table such as; metal-nonmetal, acid-base, ionic-covalent, proton number-electron number, anion-cation. Participants were 334 secondary school students aged between 13 and 17. Chemistry Concept Diagnostic Test (CCDT) consists of two-tiers and 30 questions were used. Expert opinion was obtained for content and face validity of CCDT. The bottom 27% and top 27% of student groups determined according to the total scores of the test. In order to item analyzes, item difficulty indices and item discrimination indices were determined and 13 questions were removed from the test Expert opinion for the content validity was obtained again for the final test. Statistical analyzes used for the reliability, and the reliability coefficient of 17 items was calculated as .857 for first tier; and .908 for both first and second third.
The study aims to develop two-tier diagnostic test to determine the conceptual understanding of secondary school students about concept pairs related with the periodic table such as; metal-nonmetal, acid-base, ionic-covalent, proton number-electron number, anion-cation. Participants were 334 secondary school students aged between 13 and 17. Chemistry Concept Diagnostic Test (CCDT) consist of two-tiers and 30 questions was used. Expert opinion was obtained for content and face validity of CCDT. The bottom 27% and top 27% of student groups determined according to the total scores of the test. In order to item analyzes, item difficulty indices and item discrimination indices were determined and 13 questions were removed from the test Expert opinion for the content validity was obtained again for the final test. Statistical analyzes utilized for the reliability, and the reliability coefficient of 17 item was calculated as .857 for first tier; and .908 for both first and second tiers.
Field : Eğitim Bilimleri
Journal Type : Uluslararası
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