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数学英语 40 How to Divide Fractions

by Jason Marshall A few months ago we talked about how to multiply fractions. Now that were comfortable doing this and weve talked about a few applications of multiplying fractions such as how to convert units and how to estimate how fast someone is

发表于:2018-12-07 / 阅读(191) / 评论(0)

数学英语

数学英语 41 What are Statistics and Estimators?

by Jason Marshall Sometimes statistics* seems magical. Of course, there isnt really anything magical going onbut the fact that statistical methods can be used to pull useful information out of a hatful of messy data is, at a minimum, remarkable. And,

发表于:2018-12-07 / 阅读(191) / 评论(0)

数学英语

数学英语 34 How to Multiply Fractions

by Jason Marshall In the last article, Is Multiplication Repeated Addition? we talked about what it really means to multiply two numbers. We found that the conventional meaning of multiplicationrepeated additionbreaks down when multiplying fractions,

发表于:2018-12-07 / 阅读(164) / 评论(0)

数学英语

数学英语 17 What Are Fractions?

图片1 图片2 by Jason Marshall Do you frequently find yourself at restaurants with friends fumbling to figure out how to split the bill and calculate the tip? Have you ever resorted to seeking advice from your smart phone? Dont worry, we all have.

发表于:2019-01-02 / 阅读(323) / 评论(0)

数学英语

VOA标准英语2010年-Newly Crowned Miss USA Has Family Root

Rana Fakih, left, the sister of Miss USA Rima Fakih, talks on the phone as her daughter looks on, in front of her grandparents house in the southern village of Srifa, near the port-city of Tyre, Lebanon, 17 May 2010 The new Miss USA, Rima Fakih, has

发表于:2019-01-13 / 阅读(148) / 评论(0)

VOA标准英语2010年(五)月

《哈利波特》“斯内普”教授经典语录合辑

著名演员艾伦瑞克曼(Alan Rickman)，1946年2月21日出生于伦敦，2016年1月14日因癌症逝世，享年69岁。还记得他在《哈利波特》系列电影中扮演的那个阴郁、伟大且有着意想不到深情的双面间谍?西弗

发表于:2019-02-09 / 阅读(222) / 评论(0)

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