Challenge 1st Grade Wakuwaku Science Book 2020-2021 12-book set Challenge 1st Grade Supplement Set Some parts have been used, such as stickers and supplements, but I think the reading material is in relatively good condition. There are some torn and folded parts. Please understand that these were used by children. Supplements have been added. Some items are missing, but there are quite a few, so I think you can enjoy them enough.