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Bu çalışmanın amacı sınıf öğretmeni adaylarının basit elektrik devreleri konusu üzerine kavramsal anlamalarını belirlemek için 15 maddeden oluşan üç aşamalı bir test geliştirmektir. Testin kapsam ve görünüş geçerliği için uzman görüşü alınmıştır. Testin yapı geçerliğini belirlemede Puanlama-2 ve güven puanı arasındaki korelasyon değeri ile yanlış pozitif ve yanlış negatif puanlarının yüzdesi hesaplanmıştır. Testin güvenirlik ve madde analizi işlemleri için Cronbach’s Alpha güvenirlik katsayısı, madde güçlük ve ayırt edicilik indeksleri, nokta çift serili korelasyon katsayısı hesaplanmıştır. Analizler sonucunda Puanlama-2 türü ile güven puanı arasında orta düzeyde, pozitif, anlamlı bir ilişkiye ulaşılmıştır. Yanlış pozitif ve yanlış negatif değerlerinin %10'un altında olduğu belirlenmiştir. Bunun yanında Cronbach’s Alpha katsayısının Puanlama-1-2-3 türleri, güven puanı ve testin tamamına ilişkin değerlerin tümünde .70 ve üzerinde olduğu belirlenmiştir. Testteki maddelerin güçlük indekslerinin .30 ile .39 ayırt edicilik indekslerinin .50 ile .80, nokta çift serili korelasyon katsayısı değerlerinin ise .41 ile .86 arasında değiştiği sonucuna ulaşılmıştır. Yapılan analizler sonucunda kavram testinin yeterli düzeyde geçerli ve güvenilir bir ölçme aracı olduğu sonucuna ulaşılmıştır. Anahtar sözcükler: Fen eğitimi, basit elektrik devreleri, kavramsal anlama, üç aşamalı test.
The aim of this study is to develop a three-step test consisting of 15 subjects to determine the class teacher candidates' conceptual understanding of the subject of simple electric circuits. Expert opinion for the scope and appearance of the test was taken. To determine the structure validity of the test, the correlation value between the score-2 and the confidence score is calculated and the percentage of the wrong positive and wrong negative points. Cronbach's Alpha reliability ratio, substance difficulty and differentiability indices, point double series correlation ratio are calculated for the test reliability and material analysis processes. The results of the analysis have achieved a positive, meaningful relationship between the score type 2 and the confidence score at a medium level. The negative and negative values are below 10%. Furthermore, the Cronbach’s Alpha ratio has been determined to be .70 and above in all types of score-1-2-3, confidence score and values relating to the whole test. The test resulted in the difficulty index of the substances from .30 to .39, the differentiability index from .50 to .80, and the point double series correlation ratio values from .41 to .86. The results of the analysis have found that the concept test is a sufficiently valid and reliable measurement tool. Keywords: Science training, simple electrical circuits, conceptual understanding, three-stage test.
The purpose of this study is to develop a three-tier concept test in order to determine conceptual understanding of elementary school teacher candidates on simple electrical circuits. 265 elementary school teacher candidates who are studying in the second, third and fourth grade of Dokuz Eylül University Buca Education Faculty participated in the study and the analyzes were performed on 258 elementary school teacher candidates. Expert opinion was obtained to determine the content and face validity of the test. In determining the construct validity of the test, the correlation value between Scoring-2 and confidence score and the percentage of false positive and false negative scores were calculated. Cronbach’s Alpha reliability coefficient, item difficulty and discrimination indices, point biserial correlation coefficient value were calculated for the reliability and item analysis of the test. Consequently, a moderate, positive and meaningful correlation was found between Scoring-2 type and confidence score. False positive and false negative values were found to be less than 10%. In addition, Cronbach's alpha coefficient was calculated for the Scoring 1-2-3, confidence score and the whole test and was found to have values of .70 and above in all. It was found that item difficulty indices ranged between .30 and .39 and that the item discrimination indices were between .50 and .80. Point biserial correlation coefficient values were found to vary between .41 and .86. Consequently, it has been identified that the concept test was adequately a valid and reliable measurement tool.
Field : Eğitim Bilimleri
Journal Type : Ulusal
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