Paphaphasid A. INNOVATION TO DEVELOP THE ABILITY TO DO CLASSROOM RESEARCH FOR THE TEACHER AT WAT PHRASRI MAHADHAT SECONDARY DEMONSTRATION SCHOOL, PHRANAKHON RAJABHAT UNIVERSITY. A CASE STUDY: TO CREATE A SERIES OF SELF-LEARNING AND CONSULTATION. PNRU JHSS [internet]. 2019 Dec. 4 [cited 2026 Sep. 24];15(1):263-77. available from: https://so05.tci-thaijo.org/index.php/PNRU_JHSS/article/view/215466