北京安贞总馆 |
|
||||
|
|
|
|
|
|
|
|
|
|
| |||
<<更多 |
|
|
借过该书的用户有 | |
|
如果您有此本书的音频或视频地址,欢迎您发给我们此书的音频或视频地址 |
①发表音频或视频,系统将为您增加相应的积分。 ②积分将为您免费延长借阅期限,详情请点击积分获得及兑换。 请从此处发送音频、视频IP地址 或 直接发送邮件至:kuailekaishi11@aliyun.com |
如果您对本书信息发现有错误信息,欢迎您提出来 | 我要纠错 |
①先登录,才能进行纠错。 ②发表一个纠错信息,审核通过系统将自动为您增加一个积分。 ③积分将为您免费延长借阅期限,详情请点击积分获得及兑换。 |
图书详细信息 |
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!
|
该图书评论 | 我要评论 |
|
|
①先登录,才能进行评论。 ②发表一条评论,系统将自动为您增加一个积分。 ③积分将为您免费延长借阅期限,详情请点击积分获得及兑换。 |
|
暂无任何评论! |
|