1) The document discusses the importance of using a child's mother tongue in education. It defines mother tongue as the first language learned at home and discusses how it differs from native language. 2) Integrating a child's mother tongue into classroom lessons allows them to learn more easily while developing critical thinking and literacy skills. Research shows children with strong mother tongue skills pick up additional languages more easily. 3) Using mother tongue in education helps develop a child's personal, social, and cultural identity. It increases their sense of well-being, confidence and academic achievement.