The effect of using the Klausmeyer and Merrill-Tenson educational models on the achievement of second grade intermediate female students in biology. cbej [Internet]. 2023 Jan. 23 [cited 2024 Jul. 2];18(74):587-640. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/9675