Journals / Dokuz Eylül Üniversitesi Buca Eğitim Fakültesi Dergisi / 2019 / Sayı: 48

A Study on Developing a Three-Tier Concept Test on Simple Electrical Circuits

Basit Elektrik Devreleri Konusunda Üç Aşamalı Kavram Testi Geliştirilmesi

Pages
69–87
Publication Date
2019-12-27
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was found that item difficulty indices ranged between .30 and .39 and that the item discrimination indices were between .50 and .80.

📌 3 Key Takeaways

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Objective & Hypothesis: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.
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Key Findings & Data: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.
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Conclusion & Impact:It was found that item difficulty indices ranged between .30 and .39 and that the item discrimination indices were between .50 and .80.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:fen eğitimi · basit elektrik devreleri · kavramsal anlama

Abstract

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.

Özet

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.

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Cite This Article

ŞENYİĞİT, Ç., SILAY, İ. (2019). A Study on Developing a Three-Tier Concept Test on Simple Electrical Circuits. Dokuz Eylül Üniversitesi Buca Eğitim Fakültesi Dergisi, Sayı: 48, 69–87. https://ajindex.com/articles/117600

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