Thank you for viewing! Yotsuya Otsuka Weekly Test Problem Collection Science, Year 6, Volume 1 *2024 Edition *With answer key and explanations [Condition] * Regarding the problem collection, as shown in the photos, there are a few pages where incorrect answers have been checked with a ballpoint pen. (Only in the portions of the Comprehensive Test at the end). The answer key is not detached and is all included, and there are no other writings. * Regarding the answer key and explanations, there are no writings. ↓↓↓↓↓↓ Considering the above points, I would like to sell this as a used item to those who can understand that it has been stored at home and inspected by an amateur.