☆☆☆☆☆
简体网页||繁体网页



点击这里下载

类似图书 点击查看全场最低价

---

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

评分☆☆☆☆☆

很喜欢，挑不出毛病，又划算，完美。

评分☆☆☆☆☆

精彩的图画,介绍了人体骨骼

评分☆☆☆☆☆

字大！性价比高！经典绘本！值得购买！

评分☆☆☆☆☆

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

评分☆☆☆☆☆

出版时间/Publication Date: 2001-02-27

评分☆☆☆☆☆

听录音不是奖励也不是鼓励。如果孩子喜欢这部动画，就会自然希望听到录音。

评分☆☆☆☆☆

Squaress to be the a good one for the next rest

评分☆☆☆☆☆

不错的书，开卷有益。

评分☆☆☆☆☆

动画要选择适合孩子的程度，有吸引力，循序渐进的片子。用于精读的动画片后续辅助资源也很重要，如音频与绘本供应不上会使家长很辛苦。另外程度太低，或反复重复的片子如米奇妙妙屋，朵拉并不适合。

类似图书 点击查看全场最低价