Payakkhin, A., Jamrassri, P. and Soparat, S. 2025. THE DEVELOPMENT OF CRITICAL THINKING CORE COMPETENCY FOR PRE-SERVICE TEACHERS BY USING INTEGRATION ACTIVITY PACKAGES WITH INTERDISCIPLINARY APPROACH IN MOOCS OPEN SYSTEM. Journal of Liberal Art of Rajamangala University of Technology Suvarnabhumi. 7, 1 (Mar. 2025), 203–215.