※Shipping will be closed from March 31st to April 3rd※ This is the main textbook for Challenge 4th and 5th grade. The 4th-grade materials are for the 2025 academic year, and the 5th-grade materials are for the 2026 academic year. Some materials were received at the end of 3rd grade as preparation for 4th grade. ★4th Grade Advanced Course Skill-Up Challenge Second half of the year. A workbook of about 70 pages for math and Japanese. ★5th Grade Alphabet Reading and Writing Book ★5th Grade World Trivia Book ★4th Grade Zero Book for Prefectures ★4th Grade 47 Prefectures Encyclopedia ★Map Symbol Desk Pad (3rd grade?) All items are unused and have no noticeable dirt or damage, but they have been stored as is, so there may be minor, unnoticeable scratches. We would like to offer these to someone who understands that this is amateur inspection and home storage, and who does not mind minor details. ※The shipping method may be changed from YuYu Mercari便 to RakuRaku Mercari便 without prior notice. ※The number of days until shipping excludes Saturdays, Sundays, and holidays.