Payakkhin A, Klomsakul P, Nilsuwan A, Vachiraporn Funan V. DEVELOPING THE ABILITY TO DESIGN ASTRONOMY TEACHING ACTIVITIES USING STEM PLUS ASTRO ACTIVITIES FOR PRE-SERVICE TEACHERS. PNRU JHSS [internet]. 2025 Dec. 29 [cited 2026 Sep. 24];20(2):209-1. available from: https://so05.tci-thaijo.org/index.php/PNRU_JHSS/article/view/283692