Developing edmodo-based online learning media to support student's skill of social studies in 21^th century

This study aims to determine the results of developing edmodo-based online learning media to support 21st century skills. Research and development adapted from Borg and Gall. Based on the type of ordinal data, researchers intend to identify the percentage value of the product that developed as data analysis. This finding shows that: (1) media validation has a percentage of 85% and it can be concluded that Edmodo are very good and do not need to be revised. It means that this media can be used for learning resources. (2) Material validation has a percentage of 88% and when viewed from the table of product feasibility analysis, it is categorized as very good and does not need to be revised. (3) The results of limited group experiments showed: 84% attractiveness aspect, 80% media efficiency, and 80% media effectiveness. Whereas, (4) broad group experiment shows that the aspect of attractiveness is 83%, media efficiency is 82%, and media effectiveness is 81%. Referring to the criteria of the product feasibility analysis, it is concluded that the application of Edmodo is very good and feasible to be used as an online learning media to support the skills of students in the 21st century.