The present study aimed to examine the effectiveness of YouTube videos in the oracy skills of a young learner through the implementation of differentiated instruction. The research which was conducted was a case study and qualitative data were collected through the use of semi-structured interviews. Action research was also conducted through a series of ten YouTube-video based lessons grounded upon the principles of differentiated instruction. The efficiency of the methods and approaches which were implemented were verified by the results of the pre-and post-listening and speaking test which were both applied before and after the intervention of the ten lessons. To triangulate the study, qualitative research was conducted in the form of semi-structured interviews to the student and his mother before and after the intervention. The findings showed that there was an improvement in the student's performance as regards the listening, the speaking, and the grammar-lexis structure skills.