A DVD that makes learning the science and social studies content taught in elementary and junior high schools fun. Easy to understand with your ears and eyes! - Title: Do You Know? Song! DVD - Contents: A DVD for learning elementary and junior high school science and social studies content - Includes: 13 videos I had put it away, so I opened it to check the operation, and I have confirmed that all the videos play without any problems. Thank you. #EarlyEducation #EarlyChildhoodEducation #EducationalToys #JuniorHighSchoolEntranceExam