This research aims to develop a teaching module based on the "Merdeka Curriculum" to preserve the Tolaki Mekongga language at the elementary school level in North Kolaka District, Southeast Sulawesi, Indonesia. The study employs a developmental research approach using the ASSURE model, involving teachers and students from three elementary schools in the district. Data were collected through expert validation and user trial questionnaires, and the results were analyzed descriptively. The validation test scored 83%, meeting the validity and suitability criteria, while the user trial results scored 85%, meeting the practicality criteria. The developed module is considered appropriate and practical for teaching the local subject of the Tolaki Mekongga language at the elementary school level in North Kolaka District. The research highlights the importance of preserving local languages and cultures through educational modules, aligning with the national curriculum's goals of national unity and linguistic diversity.This research aims to develop a teaching module based on the "Merdeka Curriculum" to preserve the Tolaki Mekongga language at the elementary school level in North Kolaka District, Southeast Sulawesi, Indonesia. The study employs a developmental research approach using the ASSURE model, involving teachers and students from three elementary schools in the district. Data were collected through expert validation and user trial questionnaires, and the results were analyzed descriptively. The validation test scored 83%, meeting the validity and suitability criteria, while the user trial results scored 85%, meeting the practicality criteria. The developed module is considered appropriate and practical for teaching the local subject of the Tolaki Mekongga language at the elementary school level in North Kolaka District. The research highlights the importance of preserving local languages and cultures through educational modules, aligning with the national curriculum's goals of national unity and linguistic diversity.