KURAM VE UYGULAMADA EGITIM BILIMLERI, cilt.13, sa.3, ss.1638-1644, 2013 (SSCI)
In this study, the aim was to combine the results obtained in independent studies aiming to determine the effectiveness of material use. The main question of the study is: "Does material use in classroom instruction improve students' academic achievements?" To answer this question, the meta-analysis method was employed. Meta-analysis is the method employed in order to statistically analyze the quantitative data collected in independent and multiple studies carried out on similar topics, and to reach a general judgment regarding the results of these studies. Certain criteria were used in order to decide which researches would be included in the meta-analysis. Based on these criteria, it was decided to include 57 experimental studies in the meta-analysis. As a result of this analysis; it was determined that the material use in classroom instruction has a positive effect in terms of academic achievement, and that this effectiveness level does not differ with respect to stages of education, course types and material types.