This course is aimed at exposing the students to the sound theoretical foundations in Second Language Acquisition (SLA) theories and encourage them to engage in the SLA research. The course consists of five units. The first unit presents the fundamental concepts of SLA and related disciplines. The second unit exposes the students to the various approaches of SLA including the universal grammar and non-language factors. The third unit presents the overview of the different theories and models of SLA. The fourth unit introduces the students to the instructed second language acquisition. The last unit engages the students to the practical work of SLA research.