DEVELOPING STUDENTS' PROBLEM-SOLVING SKILLS THROUGH LEARNING THE TOPIC OF ELLIPSE Journal title: International scientific journal Science and Innovation Authors: D.K. Khashimova, E.U. Faizullayeva Subject(s): Archaeology, Arts and Literature, Biological Sciences, Chemistry, Computer and Information Science, Economics, Education, Humanities, Law, Linguistics, Mathematics, Medicine, Philosophy, Physics, Psychology, Social Sciences, Architecture, Agricultural Science