Hazrat Umar. The Use of Mother Tongue in Teaching and Learning of Second Language (English) at the Higher Secondary Level in Islamabad Hazrat Umar Abstract The role of the mother tongue as a medium of instruction is an important issue in second language teaching a. JCTE [Internet]. 2023 Feb. 2 [cited 2024 May 15];1. Available from: https://ojs.aiou.edu.pk/index.php/jcte/article/view/217