The employee of our college, Rua’a Hatem Taleb Alwan, obtained a master’s degree in the Department of Mathematics, with honors, after discussing her thesis tagged (system dynamics of plant obstacles – animal obstacles – fish in a polluted environment) which took place on Monday 6-9-2021 in the College of Education for Science The pure – Ibn Al-Haytham \ University of Baghdad, and the Deanship of the College of Education for Pure Sciences congratulated and wished it higher academic ranks that serve the university and the college.