其他摘要：The purposes of this study were 1) to compare the geography learning achievement of Prathomsuksa V students in Social Stuies before and after learning by using Project-Based Learning 2) to compare the problem solving ability of Prathomsuksa V students in Social Stuies before and after learning by using Project-Based Learning and 3) to study the project making ability of Prathomsuksa V students in Social Stuies after learning by using Project-Based Learning. The sample consisted of Prathomsuksa V students in Bannongyang School, Chachoengsao Primary Educational Service Area Office 2 in the first semester academic year 2019 by using Cluster Random Sampling selected from one class of 25 students. The research instruments were 1) Project-Based Learning lesson plans 2) the learning achievement test in Social Stuies Learning Area about “Thai Geography” of Prathomsuksa V and the problem solving ability test and 3) the Project-Based Learning ability test. The statistics used were mean, standard deviation and t-test. The results of the study were: 1. Geography learning achievement in Social Stuies posttest score of Prathomsuksa V students by using Project-Based Learning was significantly higher than the pretest score at the .05 level. 2. The problem solving ability, posttest score of Prathomsuksa V students by using Project-Based Learning was significantly higher than the pretest score at the .05 level. 3. The Project-Based Learning ability of Prathomsuksa V students which had the average in high levels.
