Ben Franklin and the Magic Squares [平装] [5岁及以上] epub pdf mobi txt 电子书 下载 2025

Ben Franklin and the Magic Squares [平装] [5岁及以上] epub pdf mobi txt 电子书 下载 2025

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Ben Franklin and the Magic Squares [平装] [5岁及以上] epub pdf mobi txt 电子书 下载 2025

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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] epub pdf mobi txt 电子书 下载 2025

Ben Franklin and the Magic Squares [平装] [5岁及以上] 下载 epub mobi pdf txt 电子书 2025

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出 版 社/Publisher: Random House

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ＩＳＢＮ: 9780375806216

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

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喜欢这个故事！正版

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出版时间/Publication Date: 2001-02-27

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页　　数/Pages: 48

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很好，正版 ， 孩子非常喜欢。

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　　多知识结构分级阅读趋势 “书籍是人类进步的阶梯。”“知识就是力量。”书籍是人类文明的结晶，是知识的海洋。阅读是增长知识的有效途径，是接受终身教育的最好形式。

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纸张不错，印刷清晰，是我想要的，谢谢！

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