The perfect study DVD set for junior high school entrance exams, learn idioms, proverbs, and four-character idioms in a fun way. - Title: Do You Know? Idioms 1 - Title: Do You Know? Idioms 2 - Title: Do You Know? Proverbs - Title: Do You Know? Four-Character Idioms - Price: 2090 yen per disc Great value with a set of 4! Educational DVDs from Nikk Eizo that make learning fun My child used to watch these while eating dinner when they were in elementary school. They can be memorized naturally through repetition. Operation has been confirmed before listing. Thank you for looking.