Abstract:

This study aims to develop a test to measure the academic achievements of eighth-class students in the course of Science and Science in the simple machine unit. The research work group formed 160 eighth class students who completed the unit of simple machines, who are continuing their studies at a state high school in the center of Aksaray province in the 2017-2018 educational and educational year. With the purpose of the test, the field examination resulted in the preparation of a material pool consisting of 25 already selected questions. For the purpose of ensuring the scope and appearance of the test, the expert opinion has been applied and 20 material draft tests have been created. The pilot application of the draft test was carried out with 24 students. The material analysis after the pilot application determined the average matter difficulty index (pj=.57) and the average matter differentiability index (rjx=.50). The reliability of the test is calculated by the KR-21 reliability ratio (.741). The findings of the study show that the "Simple Machinery Unit Academic Success Test" is a valid and reliable test consisting of 18 already selectively asked questions.

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Abstract:

The aim of this study is to develop an achievement test consisting of multiple choice questions about the simple machines’ unit covered in the secondary school science curriculum. The sampling of the study comprises of 160 8th grade students who completed their simple machines unit, studying in a city center school located in a district of one of the metropolitan municipalities in Turkey for the 2017-2018 school year. Considering the purpose of the test, a pool of items consisting of 25 multiple choice questions was prepared as a result of the review of the literature. The piloting of the 20-question achievement test constructed as a result of expert opinion was carried out. The average item difficulty index (pj = .57) and the average item discrimination index (rjx = .50) were determined by item analysis performed after the pilot implementation. The reliability of the test as determined with reliability coefficient (.741). and use of KR-21. The analyses of the data showed that the 18-item achievement test is reliable and valid.