Atisso , Abdela, Dawit Kachine, and Dinku Feyissa. 2023. “Effects of Self-Explanation on the Expansion and Indulgent of Mathematics Teaching: Case of the Students of the University of Wachemo”. Qubahan Academic Journal 3 (1):1-12. https://doi.org/10.48161/qaj.v3n1a128.