Thank you for viewing. This is a set of Benesse Challenge for 2nd graders. It includes: April, May, June, July, September, November, December 2020, and January, February, March 2021. (August and October 2020 are missing) Science materials included. Some books are almost unused, while others have had the supplement parts, such as stickers, removed. The photos show everything included. It will be shipped in the box shown in photo 12. Please understand that these items have been stored at home for a long time. They are used items that have been used by children, so please understand this. We do not accept returns under any circumstances, so please check the photos and purchase only if you are satisfied. Thank you.