Shichida Method: Social Studies & Science Song 3-Subject Set (Japanese Geography, Biology, Physics & Chemistry) Science Song: Earth Science Edition Science Song: Biology Edition Social Studies Song: Japanese Geography Edition With CD: Operation confirmed. If you let young children with good ears and elementary school students listen to these songs, they will memorize them in no time. Learning through songs makes it easier to remember and retain information. I hope you can use them while having fun with your children. I think they can also be used as supplementary materials for elementary and junior high school entrance exams. I purchased these previously. There are some minor scratches from storage, and some writing on the item as shown in photo 8. Please understand that these are items stored at home and are used. Returns are not accepted, so please be sure to ask any questions you may have before purchasing.