书籍详情
格式
Kindle
页数
24
语言
英语
已发布
Jan 1, 2014
出版商
The Child's World
ISBN-10
1631431404
ISBN-13
9781631431401
描述
In this book, readers learn what gravity is and how it impacts weight. They learn about the US customary system and the metric system, where each is used, and the units of measurement in each system. Readers also learn about balances, scales, and estimating weights.