Hind Qassim Muhalhal, Iqbal Abdul-hussein Niema. The effect of the directed cooperative investigation strategy in learning the attacking skills by changing the direction and the direct rectilinear of the foil weapon for students. ms [Internet]. 2023 Mar. 30 [cited 2024 May 3];22(1):0097. Available from: https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/1103