CogTra Puzzle, devised by a doctor Koji Miyaguchi, Psychiatrist and Doctor of Medicine Target Age: Children who can read and write hiragana and above Boosts attention, memory, and imagination! Want to learn kanji? Want to improve calculation skills? Want to keep up in class? For adults' "brain training" and dementia prevention! 5 minutes a day! Building a foundation for learning Copy and use 84 problems in total to develop cognitive function!! Chapter 1 "Counting" Chapter 2 "Memorizing" Chapter 3 "Copying" Chapter 4 "Finding" Chapter 5 "Imagining" Price: 1,210 yen Brand new, unused. Unopened, in the original plastic bag. Will be shipped with simple packaging. Thank you for your understanding. Will be placed in a bag to prevent water damage!