Rattanosot, P.; Hajisalah, S.; Piasai, K.; Janjaroon, A.; Panichakarn, K. A STUDY OF MATHEMATICAL PROBLEM-SOLVING ABILITIES ON DIFFERENTIAL EQUATIONS BY USING A LEARNING MANAGEMENT OF KWDL TECHNIQUE FOR UNDERGRADUATE MATHEMATICS MAJOR STUDENTS. J. IND. EDUC. 2019, 18, 125-134.