Nilket, Kamonrut, Panwilai Dokmai, and Somsanguan Passago. 2020. “The Development of Problem-Based Learning Activities on Plant Growth and Response Control for Enhancing Solving of Grade 11 Students”. Community and Social Development Journal 21 (2). Chiang Mai, Thailand:35-50. https://doi.org/10.14456/rcmrj.2020.235693.