Abstract: The study aimed to investigate the effect of using the cooperative learning strategy and problem solving on the achievement of fifth grade students in social and national studies directorate of education in Busira district schools. to conduct the study, The semi-experimental approach was used and it was applied to two sections in Al-Qadisiyah Basic School for boys in the Directorate of Education in the Busira District. The study sample, which was chosen by the purposive method, consisted of (38) students.