ผลการจัดการเรียนรู้ เรื่อง อัตราส่วน สัดส่วน และร้อยละ โดยใช้เทคนิค KWDL ร่วมกับกลวิธี Box–Method ของนักเรียนชั้นมัธยมศึกษาปีที่ 1

Abstract

The purposes of this research aimed to improve the learning achievement and mathematical problem-solving ability of Mathayomsuksa 1 students through the developed learning management on ratio proportion and percentage using the KWDL technique with Box – Method, setting a 70 percent criterion. The researcher employed a one-group posttest-only design. The sample group involved 34 Mathayomsuksa students from class 1/2 who were randomly selected by simple random sampling by drawing lots, in the second semester of the 2021 academic year at Phukhieo School, Phukhieo District, Chaiyaphum Province. The research instruments included lesson plans on ratio, proportion, and percentage using the KWDL technique with Box–Method, as well as tests to assess the students’ mathematical problem-solving ability and learning achievement. The collected data were analyzed using mean, standard deviation, and z-test for one sample.

The findings were as follows: the developed learning plans achieved the efficiency of 85.13/74.71. The student’s mathematical problem-solving ability and learning achievement were statistically higher than the 70 percent criterion at the .05 level of significance.