Abstract:
This study aimed to (1) explore online social media usage among high school students, (2) to develop a learning model using project-based learning with social media and (3) to study the effects of the created learning model using project-based learning with social media approach to improve environmental literacy. The samples were 154 high school students and 7 experts and the subject in model experiment were 20 high school students. The research instruments included a questionnaire on the current situation and needs of high school students in using online social media and a model evaluation form and the data gathering instruments consisted of environmental knowledge test, environmental attitude test, environmental behavior test and student s satisfaction toward the model test questionnaire. A summary of the findings is as follows: (1) the top three online social media that the high school students use most often were Youtube (X = 2.71, S.D = 0.56) Facebook Messenger (X = 2.69, S.D. = 0.57) และ Facebook (X = 2.62, S.D. = 0.62); (2) the learning model consisted of 5 components, including instructors, learners, project-based activities, online social media and evaluation; (3) the learning model was composed of 5 steps, namely preparation, discussion, project planning and operation, and evaluation; (4) the experts rated the models suitability at the highest level (X = 4.77, SD = 0.33); (5) the experimental result indicated that the subjects had higher environmental knowledge mean scores on the post-test than the pre-test at .05 level of significance; (6) the experimental result indicated that the subjects had higher environmental attitude mean scores on the post-test than on the pre-test at .05 level of significance; (7) the experimental result indicated that the subjects environmental behavior was rated at the high level (X = 2.76, S.D = 0.50), and (8) the students satisfaction toward the model was found at the high level ( X= 4.37, S.D = 0.52).