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　　描紅和20以內的加減運算是兒童初學寫字和算術的較好方法之一。兒童在描摹訓練的過程中可以集中注意力，能夠快速掌握字的間架結構及數字、字母的形狀和寫法；在反復的數學計算中掌握基本的計算方法。本套書專門為學前兒童製作，有描紅和練習，全麵又有針對性。

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前言/序言

很好，速度快，正版，希望京東多多搞活動，優惠多多，謝謝

Thank you for the excellent service provided by Jingdong mall, and it is very good to do in warehouse management, logistics, distribution and so on. Delivery in a timely manner, distribution staff is also very enthusiastic, and sometimes inconvenient to receive the time, but also arranged for time to be delivered. At the same time in the mall management Jingdong customer service is also very good.Give us a very good shopping experience！

非常感謝京東商城給予的優質的服務，從倉儲管理、物流配送等各方麵都是做的非常好的。送貨及時，配送員也非常的熱情，有時候不方便收件的時候，也安排時間另行配送。同時京東商城在售後管理上也非常好的，以解客戶憂患，排除萬難。給予我們非常好的購物體驗。

孩子看到瞭肯定很開心 活動優惠很大很劃算

非常值，很好的算術題

Thank you very much for the excellent service provided by Jingdong mall, and it is very good to do in warehouse management, logistics, distribution and so on. Delivery in a timely manner, distribution staff is also very enthusiastic, and sometimes inconvenient to receive the time, but also arranged for time to be delivered. At the same time in the mall management Jingdong customer service is also very good, to solve customer suffering, overcome all difficulties. Give us a very good shopping experience. ！

很好，小孩喜歡，一直在京東買東西，實惠

還不錯啊，價格閤理，也比較適閤3/4歲的孩子，重要是活動太實惠瞭，簡直控製不住，贊(≧▽≦)/！

書本字跡清楚適閤學前小孩練習，小孩子很喜歡，快遞速度快，快遞員態度很好，下次還會在京東買書。