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

☆☆☆☆☆
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] 下载 mobi epub pdf txt 电子书 格式

评分☆☆☆☆☆

nice book I like it

评分☆☆☆☆☆

评分☆☆☆☆☆

正文语种/Language: 英文

评分☆☆☆☆☆

评分☆☆☆☆☆

出版时间/Publication Date: 2001-02-27

评分☆☆☆☆☆

页　　数/Pages: 48

评分☆☆☆☆☆

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

评分☆☆☆☆☆

时间并不限制在20分钟以内，只要有时间就可以听，见缝插隙。起床、早餐、上学途中、洗澡都可以听。

评分☆☆☆☆☆

出 版 社/Publisher: Random House

类似图书 点击查看全场最低价