My second daughter used these, but she no longer needs them, so I'm selling them. They were purchased from Meiko Gijuku. 1. Japanese Language 2. Mathematics 3. Science 4. Social Studies 5. Foreign Language (English) 6. Answer Key & Explanation A total of 6 books. They have been used and have writing in them. Please understand this. (See images 1-11) Would these be useful for your child?