The document provides an overview of the K to 12 Mother Tongue Curriculum Guide for grades 1 to 3 in the Philippines. It discusses the framework and principles of Mother Tongue-Based Multilingual Education (MTB-MLE), which uses the student's mother tongue as the primary language of instruction. The goals are to develop literacy and academic skills in the first language to serve as a foundation for additional language learning, and to promote multilingualism. Key points include using the familiar mother tongue to scaffold learning, developing higher-order thinking skills in the first language, and emphasizing both meaning and accuracy in language acquisition. The curriculum aims to produce students who are lifelong learners of their first, second, and third languages.