This is a complete set of 12 volumes of Benesse's Challenge 3rd Grade optional science curriculum, Kagaku-gumi. There are no noticeable stains or tears. Recommended for children who love science. Please understand that these are used children's items before purchasing. The list price for the complete set was 13,080 yen. ★Description These texts are designed to broaden children's interests in accordance with their development, fostering their ability to discover problems, create knowledge, and solve problems. Features include: Approximately 60 pages, all in color Well-balanced coverage of four fields: "Nature," "Society," "Culture," and "Science and Technology" An intellectually stimulating book that also allows for experiments using everyday items.