Assist. Lect. Atef Abdul Ali Drea and Assist. Lect. Dalia Abbas Jazaa 2020. The Effect of Using the Explanation Strategy with "Why" on Mathematical Thinking among Middle School Students in Mathematics. Journal of Arts, Literature, Humanities and Social Sciences. 55 (Aug. 2020), 233-247. DOI:https://doi.org/10.33193/JALHSS.55.2020.224.