Teacher Professional Learning Community (TPLCs) on Social Studies Toward 21 st Century Learning: A Case Study of Primary Schools in Sukhothai Province, Thailand. trainingandpractice [Internet]. 2017 Oct. 25 [cited 2024 Nov. 23];15(3):9-20. Available from: https://journal.uni-mate.hu/index.php/trainingandpractice/article/view/4699