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这是什么
这是算盘
算盘是中国古代的一项重大发明
算盘是中国传统的计算工艺
木框中间的横梁 将木材分成两部分
随着算盘的应用
人们总结出很多计算技巧 提高计算速度
算盘在中国十分流行
真有趣
大家好 欢迎来到课堂
今天我们来谈谈中国算盘
算盘是一种手动操作计算辅助工具形式
它起源于中国 迄今已有2600多年的历史
是中国古代的一项重要发明
在阿拉伯数字出现前
算盘是世界广为使用的计算工具
中国算盘
一般高20厘米 宽度则因使用者需求各异
算盘通常有七根以上的小柱子
每根柱子的上半部有两个珠子
下半部有五个珠子
宋代(960-1297年)画家张择端的
《清明上河图》画卷中可以清晰地看到
一家药店的柜台上
一个算盘躺在一本账册和药方旁
算盘通过上下拨动珠子来进行运算
如果向中间的横梁拨动珠子
就是当前的数值
如果移开珠子 当前数值归零
算盘运算高效 可进行乘法
除法 加法 减法 平方根和立方根运算
现在仍有学校教授算盘课程
今天的课就到这里
感谢观看 下次再见
-1.1 Chinese knot
-1.2 The panda
-1.3 Cheongsam
-1.4 The Great Wall
-1.5 Confucius
-1.6 Four Great Inventions of Ancient China
-1.7 Kung Fu
--Kung Fu
-1.8 Traditional Chinese Medicine
--Traditional Chinese Medicine
-Unit 1 test
--第一单元测验
-Discussion questions
--讨论题
-2.1 Baozi
--Baozi
-2.2 The Tea Ceremony
-2.3 Tangyuan
--Tangyuan
-2.4 Sugar Figurine
-2.5 Sugar-coated Haws on a Stick
--Sugar-coated Haws on a Stick
-2.6 The Alcohol
-2.7 Chinese Eight Cuisines
-2.8 Bowls and Chopsticks
-2.9 Hot-Pot
--Hot-Pot
-2.10 Dumplings
-Unit 2 test
--第二单元测验
-Discussion questions
--讨论题
-3.1 Xiangsheng
-3.2 Chinese Characters
-3.3 Chinese Dialect Groups
-3.4 Chinese Opera
-Unit 3 test
--第三单元测试
-Discussion questions
--讨论题
-4.1 The Poetry in the Tang Dynasty
--The Poetry in the Tang Dynasty
-4.2 The Poetry in the Song and Yuan Dynasties
--The Poetry in the Song and Yuan Dynasties
-4.3 Chinese Historical Tales
-4.4 Chinese Fable
-4.5 Modern Chinese Novels
-4.6 Chinese Painting
-4.7 Flower Arrangement
-4.8 The Art of Calligraphy
-4.9 Bada Shanren
-4.10 Xiang Qi ,the Chinese Chess
-4.11 Weiqi
--Weiqi
-4.12 Lion Dance
-4.13 Chinese Folk Music
-Unit 4 test
--第四单元测试
-Discussion questions
--讨论题
-5.1 The Spring Festival
-5.2 Lantern Festival
-5.3 Tomb Sweeping Day
-5.4 Dragon Boat Festival
-5.5 Qixi Festival
-5.6 The Mid-Autumn Festival
-5.7 Double Ninth Festival
-5.8 The Laba Festival
-Unit 5 Test
--Test
-Discussion questions
-6.1 Chinese Gardens
-6.2 Courtyard House
-6.3 Hutong
--Hutong
-6.4 Huizhou Architecture
-6.5 Buddhist temples and pagodas
--Buddhist temples and pagodas
-6.6 Chinese palaces
-6.7 Zhaozhou Bridge
-6.8 Buildings of Classical Learning Academies
--Buildings of Classical Learning Academies
-6.9 Memorial Archway
-Unit 6 Test
--Unit 6 Test
-Discussion questions
-7.1 Terracotta Warriors
-7.2 The Potala Palace
-7.3 Longmen Grottoes in Luoyang
-7.4 Mogao Grottoes in Dunhuang City
--Mogao Grottoes in Dunhuang City
-7.5 Shaolin Monastery
-7.6 The Forbidden City
-7.7 Temple of Heaven
-7.8 Chengde Mountain Resort in Chengde
--Chengde Mountain Resort in Chengde
-7.9 Pingyao
--Pingyao
-7.10 Lijiang Old Town
--LIjiang
-Unit 7 Test
--Unit 7 Test
-Discussion questions
-8.1 Jade burial suit
-8.2 Bianzhong
-8.3 Four-goats Square Zun
-8.4 Along the River During the Qingming Festival
--Along the River During the Qingming Festival
-Unit 8 Test
--Unit 8 Test
-Discussion questions
-9.1 Table Manners
-9.2 Birthday Celebration Customs
--Birthday Celebration Customs
-9.3 Chinese Wedding and Funeral Custom
--Chinese Wedding and Funeral Custom
-9.4 Honor the Teacher and Stress Education
--Honor the Teacher and Stress Education
-9.5 Social Etiquette
-9.6 Secretive Twelve Chinese Zodiac Signs
--Secretive Twelve Chinese Zodiac Signs
-9.7 Filial Piety
-9.8 Worship Rituals
-9.9 Gift Culture
-9.10 Temple Fair
-9.11 Honesty and Trustworthiness
-9.12 Hundred Family Surnames
-9.13 Family Roots
-9.14 The Spring Festival Couplets
--The Spring Festival Couplets
-9.15 The Spring Festival Pictures
--The Spring Festival Pictures
-9.16 Exchanging Red Envelopes
-Unit 9 Test
--Unit 9 Test
-Discussion questions
-10.1 Chinese Paper Cutting
-10.2 Printing and Dyeing
-10.3 Porcelain
-10.4 Chinese Kite
-10.5 Colorful Lantern
-10.6 Folk Toys
-10.7 Writing Brush
-10.8 The Art of Seals
-10.9 Chinese Embroidery
-10.10 Stone Carving
-10.11 Abacus
--Abacus
-10.12 Seal Carving
-10.13 The Shadow Puppetry
-10.14 Beijing Dough Figurines
-Unit 10 Test
--Unit 10 Test
-Discussion questions
-11.1 Mount Tai
-11.2 Mount Huangshan
-11.3 Mount Wutai
-11.4 Qomolangma
-11.5 Zhangjiajie Forest Park
-11.6 Guilin Scenery
-11.7 JiuZhaigou
-11.8 Hulunbeier Grassland
-11.9 Huang guoshu Waterfall
-11.10 Gulangyu
--Gulangyu
-11.11 West lake
-- West lake
-11.12 Qinghai Lake
-11.13 Mount Lushan
-Unit 11 Test
--Unit 11 Test
-Discussion questions