Nichinoken 4th Grade 2021 Academic Ability Development Test Only the 9th session from September to January. Includes problems for 4 subjects: Japanese, Math, Science, and Social Studies, with answers and explanations. Answer sheets are not included. 2021 Nichinoken 4th Grade Second Semester 4 subjects with answers and explanations With writing 9th session 2022.1.29 There is writing in pencil, which can be erased. Some writing is in ballpoint pen. Please use it to help your child prepare. Please understand that this is a used item that a child has used.