Hazrat Umar 2023. 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. 1, (Feb. 2023). DOI:https://doi.org/10.58444/jcte.v1i.217.