The Effects of Project-Based Learning Experience on Self-Discipline of Early Childhood Students in Mae Loei Network Schools under Nakhon Sawan Primary Educational Service Area Office 2

Abstract

The purpose of this research is to study the self-discipline of preschool children who participated in project-based experiences. The sample used in this study consisted of kindergarten year 1 students from Ban Klong Sai School, Mae Wong District, Nakhon Sawan Province, under the jurisdiction of the Nakhon Sawan Primary Educational Service Area Office, District 2, during the second semester of the 2025 academic year. The sample included 30 students selected through cluster random sampling. The instruments used in the experiment included a project-based experience plan that was validated by five experts and a self-discipline assessment test for preschool children, which is a multiple-choice test with limited response options and includes pictures depicting scenarios for 15 questions. The difficulty level ranged from 0.36 to 0.80, with a discrimination index of 0.36 to 0.50 and a reliability coefficient of 0.91. The researcher conducted the experiment with a single experimental group, testing before and after the learning (One-Group Pretest-Posttest Design), and then collected and analyzed the data using basic statistics, including mean and standard deviation. The research findings revealed that preschool children who participated in project-based experiences exhibited a very high level of self-discipline, with a mean percentage of 65.67 before the project-based experiences and a mean percentage of 88.87 after the project-based experiences. It is evident that the average score after the project-based experiences was significantly higher than before the experiences at the .05 level (t=13.58, p=.000).