THE EFFECTS OF OPEN APPROACH WITH BAR MODEL TECHNIQUE ON MATHEMATICS LEARNING ACHIEVEMENT AND MATHEMATICAL PROBLEM-SOLVING ABILITY OF 4 GRADE STUDENTS

Abstract

The purposes of this research were to 1) compare the mathematics learning achievement of fourth-grade elementary students before and after engaging in a learning management utilizing an open approach with the bar model technique; 2) evaluate the mathematical problem-solving ability of fourth-grade students following the implementation of the aforementioned learning management against a predetermined criterion of 70%; and   3) explore student satisfaction with mathematics learning facilitated through the open approach with the bar model technique. The research sample comprised 13 fourth-grade students enrolled in the first semester of the academic year 2566 at Banjumnan School, selected through purposive sampling. The research tools include: 1) lesson plans for mathematics utilizing the open approach with the bar model technique, specifically focusing on "addition and subtraction of numbers greater than 100,000" across 11 sessions; 2) mathematics learning achievement tests; 3) an evaluation of mathematical problem-solving abilities; and 4) a satisfaction survey for students regarding mathematics learning through open approach with bar model technique. Statistical analyses, including percentages, mean scores, standard deviations, and t-tests, were employed for data analysis. The  research  was  founded  that: 1) fourth-grade students demonstrated significantly higher mathematics learning performance after receiving learning management with the open approach and bar model technique compared to before learning management at a statistically significant level of .01; 2) the mathematical problem-solving abilities of fourth-grade students after learning management with the open approach and bar model technique exceeded the 70% criterion significantly at a .01 level of significance; and 3) students' satisfaction with mathematics learning through the open approach with the bar model technique was observed to be at the highest level.