*Result*: Improvement motivation and activity student in learning mathematics with the "MERDEKA" flow.

*Mathematics is a subject that needs to be taught to all students with the aim of equipping students with the ability to think logically, analytically, regularly, critically and creatively, as well as the ability to work together. Learning can be done individually and collaboratively with MERDEKA flow. The aim of this research is to see the increase in student activity in learning mathematics with the MERDEKA flow. This research uses a qualitative descriptive method. The research subjects consisted of 36 class XE8 students at SMAN 1 Harau for the 2023/2024 academic year. The results of the research show that by implementing learning through the MERDEKA flow, significant changes occur in terms of student motivation in participating in learning. Based on the author's observations, students are more motivated in learning, the variety of learning activities carried out is enjoyable for students. The opportunities for independent and collaborative learning given to students help students to be actively involved in learning. Based on the results of the summative assessment of the scope of material carried out, there was an increase in the average student score. [ABSTRACT FROM AUTHOR]*