Hanhaw S. 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. JEI [internet]. 2026 Jun. 29 [cited 2026 Sep. 3];28(2):291682. available from: https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/291682