Development Mathematical Problem Solving Ability on Surface Area and Volume Using Problem-Based Learning of Mattayomsuksa two Students

Abstract

The purpose of this research is to 1) Development the ability to solve math problems for grade 8 students. that is studied using problem-based learning higher than 70 percent and 2) Compare the academic achievement for grade 8 students before and after learning the topics of surface area and volume using problem-based learning. This research is an experimental study. The sample in this research were 36 students from class 2/3 at Kamalasai School, Kamalasai District, Kalasin Province. Kalasin Secondary Educational Service Area Office, Semester 1, Academic Year 2024, which was obtained by cluster random sampling. The research instruments consisted of 1) learning management plan on the topic of surface area and volume, mathematics, grade 8 students using problem based learning management 11 plans, 11 hours. 2) A test of ability to solve mathematic problems on surface area and volume for grade 8 students, subjective type showing the method of solving 10 question, 120  points. and 3) An achievement test, 4 choice, multiple choice type, 20 questions, 20 points. The statistical methods used for data analysis include the mean, percentage, standard deviation, and the use of One-sample t-test to test the first hypothesis since the data follows a normal distribution. For the second hypothesis, comparing academic achievement before and after learning, there is only one sample group. However, since the data does not follow a normal distribution, the researcher used the Wilcoxon Signed Rank test.

The result of the study were as follows

1. Grade 8 students who learned through problem-based learning on the topic of surface area and volume scored significantly higher than the 70 percent criterion in problem-solving ability in mathematics on surface area and volume at the .05 significance level.

2. Grade 8 students who learned through problem-based learning on the topic of surface area and volume had significantly higher academic achievement after learning compared to before learning at the .05 significance level.