Murphy, Stuart J./ Lum, Bernice (ILT)
出版社
Harpercollins Childrens Books
出版时间
2003-08-01
ISBN
9780060001209
评分
We're missing all our buttons! Three firefighters scramble to find 3 sets of matching buttons before the big parade starts. A lively introduction to the simple math concept of sorting by attributes.