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Download full textKarasah-Çakici, Sadiye; Kol, Özge; Yaman, Süleyman – Journal of Theoretical Educational Science, 2021
In this research, a meta-analysis was conducted to find out the effect level of STEM education on students' academic achievement in science courses. Scientific studies which were conducted and published in Turkey between January 2018 and March 2020 were reviewed in the research. As a result of the literature review, 54 studies that were suitable…
Descriptors: STEM Education, Academic Achievement, Science Achievement, Instructional Effectiveness
Sucuoglu, Bülbin; Demir, Seyda – Eurasian Journal of Educational Research, 2012
Problem statement: Two of the techniques used in the meta-analysis of single-case research are calculating the percentage of nonoverlapping data (PND) and the percentage of data points that exceed the median of the baseline phase (PEM). The PND is a nonparametric approach in which the researcher calculates the percentage of data points in the…
Descriptors: Foreign Countries, Autism, Pervasive Developmental Disorders, Effect Size
Delice, Ali – Educational Sciences: Theory and Practice, 2010
A concern for generalization dominates quantitative research. For generalizability and repeatability, identification of sample size is essential. The present study investigates 90 qualitative master's theses submitted for the Primary and Secondary School Science and Mathematics Education Departments, Mathematic Education Discipline in 10…
Descriptors: Statistical Analysis, Sampling, Sample Size, Effect Size
