SOULEF, Mecheri, Nabila BRIK, and Smail LAYES. 2021. “Necessary Life Skills for The Reinforcement of Positive Social Behavior in the Ninth- Grade’s Physical Education and Sport Curriculum ”. Social Sciences Journal 15 (2). Laghouat, ALGERIA, 327-37. https://doi.org/10.34118/ssj.v15i2.1574.