Chitcharoen, D., M. Khunsanthia, L. Phuengsai, and P. Audphan. “Effects of KWDL Instruction on Mathematical Problem-Solving Ability in the Pythagorean Theorem among Students in Mattayom Suksa 2”. Education journal Faculty of Education, Nakhon Sawan Rajabhat University, vol. 9, no. 2, June 2026, pp. 190-01, doi:10.2774.EDU2026.2.283421.