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内容简介

A funny, entertaining introduction to Ben Franklin and his many inventions, including the story of how he created the "magic square." A magic square is a box of nine numbers arranged so that any line of three numbers adds up to the same number, including on the diagonal! Teachers and kids will love finding out about this popular teaching tool that is still used in elementary schools today!

精彩书评

"In this lively offering from the Step into Reading + Math series, young readers will learn about both Benjamin Franklin and magic squares--square grids of numerals in which all the numbers in any vertical, horizontal, or diagonal row adds up to the same sum. The text introduces Franklin as a smart, curious kid whose ideas led him to "inventing cool things"; as a witty, intelligent man whose ideas were the seeds of America's first library, fire station, and hospital; and as a "super busy guy" who amused himself during meetings of the Pennsylvania Colonial Assembly by creating magic squares. An appended section offers step-by-step directions for those who want to construct their own versions of the mathematical puzzle. The engaging, informal style of the writing and the colorful, cartoonlike illustrations make this a playful but solid choice for introducing young readers to Franklin and to magic squares."
--Booklist
Ben Franklin and the Magic Squares [平装] [5岁及以上] 电子书 下载 mobi epub pdf txt

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质量和内容都相当不错值得拥有！

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幻方……学奥数的是不是很有熟悉感。兰登出品，必属精品。很值得收一本了解了解富兰克林

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不错的分级阅读，一系列都收了

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尺寸及重量/Dimensions & Weight: 12.19x0.51x21.84cm

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ＩＳＢＮ: 9780375806216

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喜欢，是我想要的，物美价廉，送货很快，谢谢！

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多读书，也能使你的心情便得快乐。读书也是一种休闲，一种娱乐的方式。读书可以调节身体的血管流动，使你身心健康。所以在书的海洋里遨游也是一种无限快乐的事情。用读书来为自己放松心情也是一种十分明智的。

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ＩＳＢＮ: 9780375806216

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类似图书 点击查看全场最低价