Effect of using the active learning in the achievement of third grade intermediate students in mathematics and them tendency towards the study of its. jperc [Internet]. 2011 Jul. 3 [cited 2025 May 4];8(30):layla.murtadha@sc.uobaghdad.edu.iq. Available from: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/638