Selling a 9-book set from the Science Group: 6 books for 2nd grade, 3 books for 3rd grade. These are materials from the Shinken Zemi course. They're books filled with children's curiosity, leading to discoveries about "Why?" in the world, history, and the universe! I think it's a great deal to gain this knowledge for around 2000 yen ^^ These have been used by a child, so please understand that there may be signs of use, some folds, etc. If you're okay with that, please consider purchasing. Shipping from a Yamato Transport directly managed store. Thank you for looking.