The Learning Center Development to Create Knowledge, Awareness and Appreciation Value of Medicinal Plants in Mahasarakham University Demonstration School (Secondary) - Wutthisak Bunnaen; Ongart Yatniyon; Thanakrizt Peebkhunthod; Sombat Appamaraka; Prayoon Wongchantra; Phanat Phothibat; Wittaya Worapun; Autthapon Intasena (Journal of Education and Learning, 2025)