Product Name: Ebbinghaus Sticky Notes Set for 30 Days & 31 Days, 2 Books Condition: Used (partially used) Remaining Amount: Approximately 20 days worth remaining Type: Single-sided, perforated This is a set of learning sticky notes based on the Ebbinghaus forgetting curve. Useful for children's entrance exam studies or for your own qualification exam preparation. These were actually used by my child for entrance exam studies, and while a few sheets were used, they are no longer needed after the exams, so I am selling them as a set. There are still a considerable number of sheets remaining in the two books, so you can still use them. There are no writings or noticeable stains, but please understand that these are items stored at home, so please purchase only if you understand. 【Product Features】 This is a learning tool developed based on the forgetting curve theory of the German psychologist Hermann Ebbinghaus. It visualizes the timing of review before forgetting, allowing for efficient memorization. It is very useful for managing "when to review" for junior high school entrance exams, university entrance exams, and qualification exams. 【Shipping Method】 ・Shipping is included, and will be sent via anonymous shipping (Rakuraku Mercari or Yuuyu Mercari). ・The items will be packaged together in one package. ・To prevent water damage, the items will be placed in a plastic bag before being packaged in an envelope. Instant purchase is OK! For those taking entrance exams, or those who want to study efficiently, please consider this. #EbbinghausStickyNotes #EbbinghausForgettingCurve #EntranceExamStudy #QualificationExam #StudyEfficiency #Stationery #StickyNotes #ES30 #ES31