Pradang, W., T. Somchaipeng, and S. Ugsonkid. “THE EFFECTS OF ACTIVE LEARNING ACTIVITIES AND JOURNAL WRITING ON MATHEMATICAL REASONING ABILITIES ON PARALLEL LINES OF GRADE 8 STUDENTS”. Valaya Alongkorn Review, vol. 10, no. 3, Dec. 2020, pp. 60-71, https://so06.tci-thaijo.org/index.php/var/article/view/243069.