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Published by Times Press, 2013
ISBN 10: 7546407427ISBN 13: 9787546407425
Seller: liu xing, Nanjing JiangSu, JS, China
Book
paperback. Condition: New. Ship out in 2 business day, And Fast shipping, Free Tracking number will be provided after the shipment.Pub Date :2013-04-01 Language: Chinese Publisher: Chengdu Times Press abacus abacus is to the principle of mental arithmetic . For children. abacus tangible . not boring abstraction indoctrination. can greatly stimulate the child's learning motivation. Abacus heart when the child must hand-eye linkage. the brain and nervous system continues to make the appropriate positive stimulus . which can greatly facilitate the child 's overall mental and physical growth .Four Satisfaction guaranteed,or money back.
Published by Zhongzhou Ancient Books Publishing House, 2020
ISBN 10: 7534890551ISBN 13: 9787534890550
Seller: liu xing, Nanjing JiangSu, JS, China
Book
Hardcover. Condition: New. HardCover. Pub Date: 2020-05-01 Pages: 162 Language: Chinese Publisher: Zhongzhou Ancient Books Publishing House during the Song and Yuan Dynasties is brilliant development of mathematics in ancient China. has appeared in a number of outstanding mathematicians. Which is known as the Song and Yuan Four mathematics Li Ye. Qin Jiushao. Yang Hui and Zhu Shijie mathematical work. especially under heavy domestic and foreign academic .