การประชุมวิชาการระดับชาติ ครั้งที่ 16
มหาวิทยาลัยราชภัฏนครปฐม

The purposes of the research were 1) to development Mobile Online Learning on Computing Science (Information Technology) Course of Mathayomsuksa 2 with problem-based learning, 2) to find the efficiency of the developed online learning with problem-based learning, 3) to compare the learning achievement of learners before and after learning with the developed online learning with problem-based learning and 4) to finding the learners’ satisfaction toward the developed online learning with problem-based learning. The target group used in this research was 20 mathayomsuksa 2 students, which selected by simple random classroom sampling. The research tools used in this research were: 1) the developed online learning, 2) the content and technical evaluation effectiveness form, 3) the learning achievements evaluation tests and 4) the satisfaction evaluation form. The statistics used in this research were: 1) percentage, 2) mean, 3) standard deviation, 4) E1/E2 efficiency and 5) t-test. The result findings showed that: 1) the total effectiveness of developed online learning with problem-based learning was at the highest level (?̅ = 4.63, S.D. = 0.49), which content effectiveness was at the highest level (?̅ = 4.69, S.D. = 0.47) and technical effectiveness was at the highest level (?̅ = 4.57, S.D. = 0.50), 2) the efficiency of the developed online learning with problem-based learning was 84.17/83.33, which is higher than the specified threshold of 80/80 3) the learners’ learning achievements after learning with the developed online learning with problem-based learning was higher than before learning at the statistically significant value of .05 and 4) the satisfaction of learners toward the developed online learning with problem-based learning was at the highest level (?̅ = 4.85, S.D. = 0.36)