The Effect of The Tragist And Biggs Model on A Cquiring Geographical Concepts For The Fifth Literary Students of The Fifth Grade. cbej [Internet]. 2025 Jul. 24 [cited 2026 Jun. 4];30(130):342-65. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/13025