The Study of Learning Achievement and Mathematical Problem-Solving Ability on Fractions by Using KWDL Technique with Open-Ended Problems.

The purpose of this research were to study students’ learning achievement on fractions and to study students’ mathematical problem solving ability on fractions for Prathom Suksa 6 by using KWDL technique with open-ended problems. The target group of this research was a group of 7 students in Prathom Suksa 6 during the second semester of the academic year 2023 from Ban HinKaew School. The students have similar abilities in learning mathematics at a fair level. The research instruments consisted of lesson plans using KWDL technique with open-ended problems, mathematical learning achievement test and mathematical problem-solving ability test on fractions. The results of this research found that 1) the students’ learning achievement on fractions after received learning management using KWDL technique with open-ended problems has an average score of 7.57 points, which is higher than 70 percent of total score, and 100 percent of students passed the criteria of 70 percent and 2) the students’ mathematical problem-solving ability on fractions after received learning management using KWDL technique with openended problems has an average score of 17.29 points, which is higher than 70 percent of total score, and 85.71 percent of students passed the criteria of 70 percent.