Samanya, kanok- on, Wannupatam, B. ., & Charoenkiatkan, C. (2023). The Effects of Using Phenomenon-based Learning with the R-C-A question technique in the topic of Environment in the Community on Learning Achievement and Problem-solving Ability of Prathomsuksa 3 Students: The Effects of Using Phenomenon-based Learning with the R-C-A question technique in the topic of Environment in the Community on Learning Achievement and Problem-solving Ability of Prathomsuksa 3 Students. RATANABUTH JOURNAL, 5(3), 458–472. retrieved from https://so07.tci-thaijo.org/index.php/rtnb/article/view/3890