I purchased this, but I didn't use it much. I'm offering it to someone who can. 2022 Thinking Skills Plus Course, 4th Grade A set of 12 books from April to March (with answers) I will include the Career Navigation (Spring and Summer issues only). *Accessories like red pens, etc., are not included as I have disposed of them. Regarding the dice used in the March language arts section, I will include two that can be assembled. ⚠ This item has been filled in and marked. (My child marks things quite enthusiastically... I apologize.) The marks are from red pencils, ballpoint pens, water-based pens, etc., and could not be erased, so they remain... However, I have erased all pencil markings. (Pencil marks may still be visible.) I have tried my best to erase pen markings with correction tape/fluid, but as you can see in the photos (some examples), some pages still have pen marks. *This is based on my amateur assessment and inspection, so I may have missed something. ⚠ Some issues have writing on the cover (see photo 3), which I have erased with correction tape/fluid. The answer sheet for the April issue has a torn cover, which has been reinforced with cellophane tape. ⚠ Also, the science teaching aids for April, December, and January are missing. Therefore, I will leave my child's answers in the science sections for April, December, and January as they are. I hope you can refer to them. ▶ Since this is a product that my child used for studying, please understand that there are pencil marks, eraser dust, stains, dog-eared pages, etc., in addition to the markings. Thinking Skills Plus Course, 4th Grade Monthly tuition: 4,090 yen. For 12 months, it's 46,680 yen. This is especially recommended for those considering taking the entrance exam for public integrated junior and senior high schools. There is one aptitude test question every month. Although there are remaining marks and pencil marks, and the condition is not very good, it's a great deal, cheaper than the monthly tuition! How about giving it a try? I hope to sell this to someone who understands that it is a used item and has been stored at home. Please refrain from purchasing if you are overly concerned about the condition.