{"product_id":"9784759924848","title":"１３歳の数活動・数表記の発達とその影響要因の分析","description":"年少幼児に焦点を当て、特に周囲の人々との対人関係や数環境プリントに注目し、初期数活動の発生過程ならびにその影響要因を検討。初期数発達に関する理論を提案。","brand":"風間書房","offers":[{"title":"Default Title","offer_id":48483931226416,"sku":"","price":4950.0,"currency_code":"JPY","in_stock":true}],"url":"https:\/\/www.maruzenjunkudo.co.jp\/products\/9784759924848","provider":"丸善ジュンク堂書店ネットストア","version":"1.0","type":"link"}