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The main objective in this study is to measure the effectiveness of social media assisted learning devices in improving students communication on wave material. The research method used was an experimental design of One Group Pretest-Posttes with a Problem Based Learning learning model. This research is part of Research and Development (R & D) with the ADDIE model. Learning tools developed in the form of syllabus, lesson plans, teaching materials, LKPD, student communication tests and appropriate assessment instruments. This research was conducted at SMP Negeri 1 Limboto with a sample of 28 people. The results of the study and data analysis showed that the average communication skills of students experienced differences. This is indicated by the acquisition of the N-Gain value which is equal to 0.62 in the medium category. Based on the results and analysis it can be concluded that learning devices assisted by social media are effective for improving students communication on wave concept.