Akçay, Ahmet Oğuz, and Ufuk Güven. 2021. “The Effects of Bringing Interesting Materials into the Classroom on 4th Grade Students’ Mathematics Achievement: A Comparative Study Using TIMSS Data”. Shanlax International Journal of Education 9 (4), 480-88. https://doi.org/10.34293/education.v9i4.4108.