The price has been increased to cover shipping. This is a set of 11 books on classroom management for #elementary school #teachers. ・They are from the 1990s to 2000s. One book is in good condition, but the other 10 books, which are #educational technology supplements, are very old and have turned brown. ・These books are 30 years old, and while there are differences from current education, I think there are some parts that can be helpful because they haven't changed over time. In this day and age, I don't think people copy certificate frames from books, but I'm listing them just in case. If you are a newly hired teacher and want to learn various teaching methods, please take a look. ◎The price is set to "approximately 0 yen profit" (the total amount includes shipping + box fee + Mercari commission + profit). ◎If you only want a portion of the 11-book set, the prices are as follows (prices may vary for thick books): 　1-3 books - 300 yen 　4-6 books - 600 yen 　7-11 books - 900 yen In this case, I will stop the listing when a purchase offer is made and relist it as a dedicated listing. I will inform you of the price when you decide which books to purchase. I can also provide a preliminary estimate. I can also inform you of the condition of the books at that time. ◎I plan to relist any remaining books.