Assist. Lect. Rafe Mutlak Aswad 2021. Productive Thinking and its Relationship to the Twenty-First Century Skills among Students of the Mathematics Department in the College of Education. Journal of Arts, Literature, Humanities and Social Sciences. 63 (Jan. 2021), 215-224. DOI:https://doi.org/10.33193/JALHSS.63.2021.388.