This is a learning material for elementary school students, aimed at the intermediate level. - Title: Puzzles to Get Smarter - Target Grade Level: Elementary School Intermediate - Publisher: Gakken - How to Use: Solve equations without using equations Pencil markings present Detachable pages Except for the introductory pages, the same problems are printed on both sides of the pages. Since I solved the problems on the front pages with a pencil, you can use the back pages to solve them without any markings. The example pages, which are introductory, have markings, so you will need to erase them before use. These were good problems. Thank you for looking.