THE EFFECTS OF PROBLEM-BASED LEARNING MANAGEMENT ON SCIENCE ACHIEVEMENT AND PROBLEM SOLVING ABILITY OF GRADE 3 STUDENTS

Abstract

The purposes of this research were to 1) compare the science achievement of grade 3 students between before and after using problem-based learning and 2) compare the science problem solving ability of grade 3 students between before and after using problem-based learning. The Sample consisted of 30 grade 3 students in the first semester of the 2023 at Municipal School 1 Sok Koon School by cluster random sampling. The research instruments were 1) Lesson plan using problem-based learning. 2) the science achievement test has 30 questions, with a difficulty values between 0.40 - 0.80, discrimination values between 0.20 - 0.40 and reliability values was 0.80. 3) the science problem solving ability test has 30 questions, with a difficulty values between 0.50 - 0.80, discrimination values between 0.20 - 0.60 and reliability values was 0.82. The statistics for data analysis comprised mean, standard deviation, percentage, and t-test for independent samples. 1) the science achievement of grade 3 students after learning was significantly higher than before at the .05 levels. 2) the science problem solving ability of grade 3 after learning was  significantly higher than before at the .05 levels.