Özet:

This study is a meta-analysis study investigating the effect of the use of GeoGebra software on students’ academic achievements in mathematics lessons. With this respect, studies conducted in Turkey were browsed via Council of Higher Education (YÖK) Thesis Center, Turkish Academic Network and Information Center (ULAKBİM) and from database such as Google Scholar. Total of 36 experimental studies and 39 effect sizes were obtained. The sample of this meta-analysis study consisted of a total of 1892 students, 951 of which were in experimental and 941 were in control groups. The moderator analyses and the average effect size values were examined by coding the studies according to the study year, publication type, education level, learning domain, school type and sample sizes. It was concluded that each study included in this study had a positive effect size value and the average effect size value was  0,886, indicating that this study had a high effect size and that GeoGebra software positively affected students’ academic achievement. Moreover, it was found that the variables in the study had a homogeneous structure and that the effect size values did not make any statistically significant difference.

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