Learning Management Using KWDL Model to Enhance Critical Thinking and Mathematical Problem Solving Abilities on Exponential Function for Mathayomsuksa 4 Students

Abstract

            The purposes of this research were to 1) develop mathematics lesson plans using KWLD model for enhancing critical thinking and mathematical problem-solving skills on the topic of exponential functions based on the 70/70 criterion, 2) find out the effectiveness index of using KWDL model to enhance critical thinking and mathematical problem solving abilities on exponential functions, 3) compare the mathematics learning achievement on the topic of exponential functions, who were taught by the enhancing mathematical problem-solving skills on the topic of exponential functions based on the 70% criterion, and 4) compare mathematics problem-solving abilities, who were taught by the mathematics plans using KWLD model, with the 70% criterion, The sample group was 26 Mathayomsuksa 4 students, who were selected by cluster random sampling. The experiment lasted 16 periods, each covering 50 minutes. The instruments in data collection consisted of sixteen lesson plans, an achievement test on the mathematics subject under the topic of exponential functions, which was a multiple-choice test containing 20 items with four answers to select, and a 6-item subjective test to determine the students’ mathematical problem-solving ability. The collected data were analyzed by using means of arithmetic mean, means of percentage, standard deviation, and one-sample t-test.
              The research results are as follows. 1) Result develop mathematics lesson plans using KWLD model for enhancing critical thinking and mathematical problem-solving skills on the topic of exponential function was 77.58/73.85, which is higher the establish criterion of 70/70. 2) The KWDL lesson plan, which enhanced the ability to critically think and solve mathematical problems on the topic of exponential functions, had an effectiveness index of 0.4809, indicating the students’ progress at 48.09%. 3) The critical thinking of the students, who were taught by the mathematics lesson plans based on the KWDL model in a topic of exponential functions, was significantly higher than the criteria 70% at the 0.1 level. 4) The mathematical problem-solving of the students, who were taught by the mathematics lesson plans based on the KWDL model in a topic of exponential functions, was significantly higher than the criteria 70% at the .05 level.
Keywords : KWDL / exponential function / critical thinking / problem-solving skill