{"product_id":"brain-training-60-days-of-calculation-exercises-by-professor-ryuta-kawashima","title":"Brain Training: 60 Days of Calculation Exercises by Professor Ryuta Kawashima","description":"\u003cp\u003eBrain Training: 60 Days of Calculation Exercises by Professor Ryuta Kawashima\u003c\/p\u003e\n\u003cp\u003eby Kawashima, Ryuta\u003c\/p\u003e\n\u003cp\u003eImprove your mental agility with this calculation drill book, designed for adults by Professor Ryuta Kawashima and published by Kumon. This book provides a 60-day program of calculation exercises aimed at stimulating and training the brain. It's a fun and engaging way to keep your mind sharp. Note: The text is entirely in Japanese. Brand New Japanese Edition. Ships worldwide from Japan via Japan Post. Expedited shipping via FedEx available.\u003c\/p\u003e\n\u003cp\u003eISBN 9784774328256 · ISBN-10 4774328251\u003c\/p\u003e","brand":"Amanogawa","offers":[{"title":"Default Title","offer_id":53203199164527,"sku":"AB-9784774328256","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/2849\/0863\/files\/9784774328256_a5c703f8-e939-48cc-b7eb-ba67a75758cd.jpg?v=1780989913","url":"https:\/\/amanogawa.cloud\/products\/brain-training-60-days-of-calculation-exercises-by-professor-ryuta-kawashima","provider":"Amanogawa","version":"1.0","type":"link"}