Tuksitha, Katachai, Wanintorn Supap, and Chakkrid Klin-eam. “THE RESULTS OF LEARNING MANAGEMENT THROUGH GUIDED DISCOVERY METHOD ON APPLICATION OF TRIGONOMETRY TO ENHANCE MATHEMATICAL THINKING FOR STUDENTS IN MATTAYOM 4”. Life Sciences and Environment Journal 19, no. 1 (April 23, 2018): 150–160. Accessed April 26, 2024. https://ph01.tci-thaijo.org/index.php/psru/article/view/90073.