I've kept these at home for several years. My children were really into playing quizzes at kindergarten. They were also able to use them for self-study and free research even after they entered elementary school. There is some fading on the cover, but there are no noticeable odors or stains, and I think they are in good enough condition to be read comfortably. They would also be suitable for waiting rooms at nursery schools or hospitals. Thank you for your understanding regarding these used books. 1. Animals 2. The Body 3. Cars, Trains 4. Insects 5. Sea Creatures 6. Food 7. Space 8. People at Work 9. Dinosaurs 10. The Year 11. Birds 12. Plants Set of 12 books Original price: 600 yen Picture book Gakken Kumon