Hanhaw, S. 2026. THE DEVELOPMENT OF A COOPERATIVE LEARNING MANAGEMENT MODEL USING TECHNIQUES TAI TO PROMOTE MATHEMATICS PROBLEM SOLVING SKILLS OF MATHEMATICS MAJORS, FACULTY OF EDUCATION, RAMKHAMHAENG UNIVERSITY. Journal of Education and Innovation. 28, 2 (Jun. 2026), 291682. DOI:https://doi.org/10.71185/jeiejournals.v28i2.291682.