8. Sınıf Basit Makineler Ünitesine Yönelik Başarı Testi Geliştirme: Geçerlik ve Güvenirlik Çalışması
Developing an Achievement Test for the Unit of Simple Machines in the 8th Grade Curriculum: Validity and Reliability Study

Summary/Abstract: The purpose of the current study is to develop a unit achievement test comprised of multiple-choice questions prepared considering the learning objectives of the unit of “Simple Machines” in the 8th grade science curriculum. The change made in line with the content of the 2016 – 2017 TEOG topics was the addition of the unit of “Simple Machines” to the existing units in the science curriculum. As a result of this change, it was decided that the existing achievement tests do not completely cover the content of the unit objectives. In the current study, it was aimed to develop a Simple Machines Unit Test complying with the unit objectives determined by the Ministry of National Education. First, within the framework of the selected unit, an item pool including at least three questions for each objective determined by the Ministry of National Education was constructed. Then a table of specifications in accordance with the objectives was formed. In order to establish the content validity of the constructed item pool, an expert opinion form was constructed and then the prepared questions were submitted to the expert review. Then, a pilot study was conducted with 243 students. As a result of the item analysis, the reliability coefficient was found to be .882. In the analysis of the data, it was concluded that the Simple Machines Unit Achievement Test yielded reliable and valid results. As a result, it can be argued that the Simple Machines Unit Achievement Test is a reliable and valid test that can be used in both scientific research and in the classroom assessment processes by teachers.

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