Set of 8 math and geometry workbooks for elementary school students. - Series Name: Thinking Skills & Math Workbook Series - Number of Books: 8 - Target Age: Elementary School Students - Contents: Math, geometry, ratios, and other problem sets - Publisher: M-Group Thank you for viewing. The 4 books in photo 2 have been used with notes. "Dot Drawing 3" and "Periodic Calculation" have some pages with circles marked in ballpoint pen (photos 4 and 5). The 3 books in photo 3 have had their bindings cut, making them easy to photocopy on both sides. No writing. Excellent condition. "Prime Factor Puzzle" has writing on all pages. There are 8 books in total, with varying conditions. Each book originally costs 500 yen. Thank you for your consideration.