Hind Qassim Muhalhal and Iqbal Abdul-hussein Niema 2023. 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. Modern Sport. 22, 1 (Mar. 2023), 0097. DOI:https://doi.org/10.54702/ms.2023.22.1.0097.