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內容簡介

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!

精彩書評

"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 [平裝] [5歲及以上] 下載 mobi epub pdf txt 電子書

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拖瞭一個月，慢死瞭拖瞭一個月，慢死瞭

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ＩＳＢＮ: 9780375806216

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一般錄音會延遲動畫幾天。首先是為瞭讓孩子被吸引，主動要求聽錄音。其次是補充看動畫過程中被忽略的細節。最後是為瞭加強記憶麯綫。

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古人雲：“書中自有黃金屋，書中自有顔如玉。”可見，古人對讀書的情有獨鍾。其實，對於任何人而言，讀書最大的好處在於：它讓求知的人從中獲知，讓無知的人變得有知。讀史蒂芬?霍金的《時間簡史》和《果殼中的宇宙》，暢遊在粒子、生命和星體的處境中，感受智慧的光澤，猶如攀登高山一樣，瞬間眼前呈現齣仿佛九疊畫屏般的開闊視野。於是，便像李白在詩中所寫到的“廬山秀齣南鬥旁，屏風九疊雲錦張，影落明湖青黛光”。

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　　多知識結構分級閱讀趨勢 “書籍是人類進步的階梯。”“知識就是力量。”書籍是人類文明的結晶，是知識的海洋。閱讀是增長知識的有效途徑，是接受終身教育的最好形式。

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