The Development of Learning Supplementary Media entitle Personal Data Protection Laws for Late Adolescence

The purposes of this research were 1) to analyze, design and develop a learning supplementary media entitle Personal Data Protection Laws for late adolescence, 2) to evaluate the effectiveness of the media, 3) to compare the learning achievement between pretest and posttest scores, and 4) to assess the learners’ satisfaction toward the media. The sample group were 34 second-year vocational certificate students majoring in Computer Business at Suvarnabhumi College, Samut Prakan Province. Data was collected in the first semester of the academic year 2022. The research tools included 1) the learning media, 2) the achievement test, and 3) the learners’ satisfaction assessment form. The statistic used in this research were mean, standard deviation, and dependent t-test. The research results found that the quality of the learning media evaluated by three experts was at a high level with mean = 4.49, S.D. = 0.37. The effectiveness of the learning media was 82.18/83.43 which higher than the criteria of 80/80. When compare the pre-test and post-test score, it was found that the post-test score was higher than the pre-test score with statistical significance at 0.01 level. The learners’ satisfaction toward the learning media was at a very high level with mean = 4.58, S.D. = 0.65.