Jirachotdaecho, G., and S. Khum-un. “A Study of the Learning Achievement and Attitude in Mathematics of Grade 12 Student Using the Cooperative Learning Management with Student Teams Achievement Division (STAD) and KWDL Technique”. Ratchaphruek Journal, vol. 21, no. 3, Dec. 2023, pp. 16-31, doi:10.14456/rpjnrru.2023.32.