Multilingualism is the ability to speak more than one language at a time. It refers to using the language of learners as a strategy in school. Mother tongue-based multilingualism means learners begin their schooling in the mother tongue/home language and move on to add many languages.It develops cognitive and reasoning skills to enable the child to operate equally in different languages. It is used as a resource to teach a new language to the child with the help of a mother tongue or other known language.Multilingual children are capable of greater cognitive flexibility and creativity and perform better academically than monolingual. It emphasizes the significance of a smooth transition between the home and school language.Hence, it is clear that Mother tongue-based multilingualism means learners begin with their mother tongue and add many languages.