THE STUDY OF HIGH SCHOOL STUDENTS’ MATHEMATICAL COMPETENCY ON INTEREST AND TIME VALUE OF MONEY BY TEACHING THROUGH PROBLEM SOLVING
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Abstract
This research aims to study the mathematical competency on interest and time value of money of high school students by teaching through problem-solving. The target group consists of 16 children who are grade eleven students in the first semester of the 2023 academic year at school in Bangkok. Research instruments include teaching mathematics through problem-solving lesson plans, worksheets, test of mathematical competency and observation form. The quantitative data is analyzed by using mean, standard deviation, and frequency, and qualitative is analyzed by content analysis. The results of this research reveal that 1) the majority of students’ mathematical reasoning competency (56.25%) is in unsatisfied level, and 2) Each student’s mathematical competencies (mathematical thinking and handling competency, mathematical reasoning competency and mathematical communication competency) are slightly difference.
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